C. Cycle
\n\u7ed9\u5b9a\u4e00\u4e2a\u7ade\u8d5b\u56fe\uff0c\u627e\u4e00\u4e2a\u957f\u5ea6\u4e3a 3 \u7684\u5708\u3002<\/p>\n
D. Not Quick Transformation
\n\u9012\u5f52\u7684\u7ed9\u4f60\u5e8f\u5217 {ai} \u7684\u751f\u6210\u89c4\u5219\uff0c
\n\u8981\u6c42\u4f60\u8ba1\u7b97\u6ee1\u8db3 i \u2208 [l, r]\u3001ai \u2208 [u, v] \u9879\u7684\u548c\u3002<\/p>\n
<\/p>\n
E. Tree or not Tree
\n… \u7ed9\u4f60\u4e00\u9897\u591a\u4e00\u6761\u8fb9\u7684\u6811\uff0c\u8981\u6c42\u652f\u6301\u4e0b\u5217\u64cd\u4f5c\uff1a<\/p>\n
C. Cycle D. Not Quick Transformation E. Tree or not Tree \u3002\u53ea\u9700\u8981\u7ef4\u62a4\u5b50\u6811\u4e2d.. . \u3002\u3002\u7136\u540e\u91cc\u9762\u8fd8\u591a\u4e86\u4e00\u4e2a\u6076\u5fc3\u7684\u73af\u8981\u5904\u7406\u3002\u3002 PS: \u7136\u540e\u591a\u4e86\u4e00\u4e2a\u73af\u5c31\u4e0d\u4f1a\u505a\u4e86\u3002\u3002\u4e48\uff1f\u3002\u3002\u3002\u8fd9\u79cd\u7a0b\u5ea6\u5728\u6bd4\u8d5b\u7684\u65f6\u5019\u600e\u4e48\u80fd\u63d0\u4f9b\u8f93\u51fa\u5462\u3002\u3002\uff01\uff01\u3002\u3002\uff08\u597d\u5427\u3002\u3002\u5176\u5b9e\u5927\u5bb6\u90fd\u4e0d\u4f1a\u505a\u3002\u3002\uff09<\/p>\n http:\/\/www.codeforces.com\/contest\/117<\/a> Brief description: C. Cycle \u7ed9\u5b9a\u4e00\u4e2a\u7ade\u8d5b\u56fe\uff0c\u627e\u4e00\u4e2a\u957f\u5ea6\u4e3a 3 \u7684\u5708\u3002 D. Not Quick Transformation \u9012\u5f52\u7684\u7ed9\u4f60\u5e8f\u5217 {ai} \u7684\u751f\u6210\u89c4\u5219\uff0c \u8981\u6c42\u4f60\u8ba1\u7b97\u6ee1\u8db3 i \u2208 [l, r]\u3001ai \u2208 [u, v] \u9879\u7684\u548c\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[18],"tags":[],"class_list":["post-32","post","type-post","status-publish","format-standard","hentry","category-codeforces"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-w","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/32","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/comments?post=32"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/32\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=32"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=32"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=32"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\u5229\u7528\u7ade\u8d5b\u56fe\u7684\u6027\u8d28\uff0c\u80fd\u5f97\u5230\u4e00\u4e2a\u5341\u5206\u4f18\u7f8e\u7684 O(n^2) \u7b97\u6cd5.. Orz..
\n(\u8be6\u7ec6\u53c2\u89c1\u76fe\u54e5\u89e3\u9898\u62a5\u544a<\/a>\u3002~)<\/p>\n
\n\u3002\u3002\u76f8\u5f53\u4e8e\u67d0\u79cd\u865a\u5b50\u5777\u5783\u7ebf\u6bb5\u6811\u3002\u6ce8\u610f\u5230\u9012\u5f52\u4e0b\u53bb\u7684\u65f6\u5019\u6bcf\u4e00\u5c42\u90fd\u662f\u4e00\u7ec4\u7b49\u5dee\u6570\u5217\u5c31\u53ef\u4ee5\u4e71\u641e\u4e86\u3002<\/p>\n
\n\u3002\u3002\u5176\u5b9e\u8fd9\u9898\u4f60\u662f\u4e2a\u9759\u6001\u6811\u5427\u3002\u3002\u6ce8\u610f\u5230\u8fde\u901a\u5757\u6570\u7b49\u4e8e\u5c31\u662f\u6709\u591a\u5c11\u6761 0 \u8fb9.. .
\n\u50cf\u8fd9\u79cd\u5168\u5c40\u4fe1\u606f\u5176\u5b9e\u53ea\u662f\u4e00\u4e9b\u5c40\u90e8\u4fe1\u606f\u7684\u79ef\u7d2f\uff0c\u53c2\u89c1 09 \u5e74 IPSC \u67d0\u9898\u3002\u3002\u8fd9\u9898\u4e0d\u662f\u5f88\u88f8\u4e48\u3002\u3002<\/p>\n
\n\u3002\u30020 \u8fb9\u6570\u76ee\uff0c1 \u8fb9\u6570\u76ee\uff0c0 + 1 \u8fb9\u7684\u548c\u7684\u6570\u76ee\uff08\u4e5f\u5c31\u662f sz\uff09\u3002\u3002
\n\u4efb\u610f\u7ef4\u62a4\u4e24\u4e2a\u5373\u53ef\u3002\u3002<\/p>\n
\n\u3002\u3002\u3002\u3002\u5904\u7406\u73af\u7684\u65b9\u6cd5\u6709\u5f88\u591a\u5427\uff0c\u53ef\u4ee5\u7528\u5e76\u67e5\u96c6\u7ef4\u62a4\u4e00\u4e2a\u666e\u901a\u70b9\u94fe\u63a5\u5230\u73af\u7684\u4f4d\u7f6e\u3002\u3002\u6216\u8005\u3002\u611f\u89c9\u4e5f\u53ef\u4ee5\u5c06\u8fd9\u4e2a\u73af\u7f29\u70b9\u3002
\n\u3002\u7136\u540e\u5355\u72ec\u7528\u4e00\u9897\u7ebf\u6bb5\u6811\u5904\u7406\u73af\u3002\u3002\u3002<\/p>\n\r\n#include <cstring>\r\n#include <cstdio>\r\n#include <vector>\r\nusing namespace std;\r\n#define FOR_1_C(i, a, b) for (int b____=int(b),i=a;i<=b____;++i)\r\n#define INS(A, P, B) A.insert(A.begin() + P, B)\r\n#define PB push_back\r\ntypedef vector<int> VI;\r\ninline void RS(char *s){scanf("%s", s);}\r\ntemplate<class T> inline void RD(T &x){char c; for (c = getchar(); c < '0'; c = getchar()); x = c - '0'; for (c = getchar(); c >= '0'; c = getchar()) x = x * 10 + c - '0';}\r\n\r\n\/* .................................................................................................................................. *\/\r\n\r\nconst int N = 5009;\r\nVI L; char G[N];\r\nint n, l, r;\r\n\r\nint main(){\r\n\r\n RD(n), RS(G), L.PB(1);\r\n\r\n FOR_1_C(i, 2, n){\r\n\r\n RS(G + 1), l = 0, r = i - 2;\r\n while (l <= r && G[L[l]] == '0' ) ++l;\r\n while (r >= 0 && G[L[r]] == '1' ) --r;\r\n\r\n if (l == r + 1){\r\n INS(L, l, i);\r\n }\r\n else {\r\n printf("%d %d %d\\n", L[l], L[r], i);\r\n return 0;\r\n }\r\n\r\n }\r\n\r\n puts("-1");\r\n}\r\n<\/pre>\n\r\n\/** ` Micro Mezzo Macro Flation -- Overheated Economy ., **\/\r\n\r\n#include <algorithm>\r\n#include <iostream>\r\n#include <iomanip>\r\n#include <sstream>\r\n#include <cstring>\r\n#include <cstdio>\r\n#include <string>\r\n#include <vector>\r\n#include <bitset>\r\n#include <queue>\r\n#include <stack>\r\n#include <cmath>\r\n#include <ctime>\r\n#include <list>\r\n#include <set>\r\n#include <map>\r\n\r\nusing namespace std;\r\n\r\n#define REP(i, n) for (int i=0;i<int(n);++i)\r\n#define FOR(i, a, b) for (int i=int(a);i<int(b);++i)\r\n#define DWN(i, b, a) for (int i=int(b-1);i>=int(a);--i)\r\n#define REP_1(i, n) for (int i=1;i<=int(n);++i)\r\n#define FOR_1(i, a, b) for (int i=int(a);i<=int(b);++i)\r\n#define DWN_1(i, b, a) for (int i=int(b);i>=int(a);--i)\r\n#define REP_C(i, n) for (int n____=int(n),i=0;i<n____;++i)\r\n#define FOR_C(i, a, b) for (int b____=int(b),i=a;i<b____;++i)\r\n#define DWN_C(i, b, a) for (int a____=int(a),i=b-1;i>=a____;--i)\r\n#define REP_N(i, n) for (i=0;i<int(n);++i)\r\n#define FOR_N(i, a, b) for (i=int(a);i<int(b);++i)\r\n#define DWN_N(i, b, a) for (i=int(b-1);i>=int(a);--i)\r\n#define REP_1_C(i, n) for (int n____=int(n),i=1;i<=n____;++i)\r\n#define FOR_1_C(i, a, b) for (int b____=int(b),i=a;i<=b____;++i)\r\n#define DWN_1_C(i, b, a) for (int a____=int(a),i=b;i>=a____;--i)\r\n#define REP_1_N(i, n) for (i=1;i<=int(n);++i)\r\n#define FOR_1_N(i, a, b) for (i=int(a);i<=int(b);++i)\r\n#define DWN_1_N(i, b, a) for (i=int(b);i>=int(a);--i)\r\n#define REP_C_N(i, n) for (n____=int(n),i=0;i<n____;++i)\r\n#define FOR_C_N(i, a, b) for (b____=int(b),i=a;i<b____;++i)\r\n#define DWN_C_N(i, b, a) for (a____=int(a),i=b-1;i>=a____;--i)\r\n#define REP_1_C_N(i, n) for (n____=int(n),i=1;i<=n____;++i)\r\n#define FOR_1_C_N(i, a, b) for (b____=int(b),i=a;i<=b____;++i)\r\n#define DWN_1_C_N(i, b, a) for (a____=int(a),i=b;i>=a____;--i)\r\n\r\n#define DO(n) while(n--)\r\n#define DO_C(n) int n____ = n; while(n____--)\r\n#define TO(i, a, b) int s_=a<b?1:-1,b_=b+s_;for(int i=a;i!=b_;i+=s_)\r\n#define TO_1(i, a, b) int s_=a<b?1:-1,b_=b;for(int i=a;i!=b_;i+=s_)\r\n#define SQZ(i, j, a, b) for (int i=int(a),j=int(b)-1;i<j;++i,--j)\r\n#define SQZ_1(i, j, a, b) for (int i=int(a),j=int(b);i<=j;++i,--j)\r\n#define REP_2(i, j, n, m) REP(i, n) REP(j, m)\r\n#define REP_2_1(i, j, n, m) REP_1(i, n) REP_1(j, m)\r\n\r\n#define ALL(A) A.begin(), A.end()\r\n#define LLA(A) A.rbegin(), A.rend()\r\n#define CPY(A, B) memcpy(A, B, sizeof(A))\r\n#define INS(A, P, B) A.insert(A.begin() + P, B)\r\n#define ERS(A, P) A.erase(A.begin() + P)\r\n#define BSC(A, X) find(ALL(A), X) \/\/ != A.end()\r\n#define CTN(T, x) (T.find(x) != T.end())\r\n#define SZ(A) int(A.size())\r\n#define PB push_back\r\n#define MP(A, B) make_pair(A, B)\r\n\r\n#define Rush int T____; RD(T____); DO(T____)\r\n#pragma comment(linker, "\/STACK:36777216")\r\n#pragma GCC optimize ("O2")\r\n#define Ruby system("ruby main.rb")\r\n#define Haskell system("runghc main.hs")\r\n#define Pascal system("fpc main.pas")\r\n\r\ntypedef long long LL;\r\ntypedef double DB;\r\ntypedef unsigned UINT;\r\ntypedef unsigned long long ULL;\r\n\r\ntypedef vector<int> VI;\r\ntypedef vector<char> VC;\r\ntypedef vector<string> VS;\r\ntypedef vector<LL> VL;\r\ntypedef vector<DB> VD;\r\ntypedef set<int> SI;\r\ntypedef set<string> SS;\r\ntypedef set<LL> SL;\r\ntypedef set<DB> SD;\r\ntypedef map<int, int> MII;\r\ntypedef map<string, int> MSI;\r\ntypedef map<LL, int> MLI;\r\ntypedef map<DB, int> MDI;\r\ntypedef map<int, bool> MIB;\r\ntypedef map<string, bool> MSB;\r\ntypedef map<LL, bool> MLB;\r\ntypedef map<DB, bool> MDB;\r\ntypedef pair<int, int> PII;\r\ntypedef pair<int, bool> PIB;\r\ntypedef vector<PII> VII;\r\ntypedef vector<VI> VVI;\r\ntypedef vector<VII> VVII;\r\ntypedef set<PII> SII;\r\ntypedef map<PII, int> MPIII;\r\ntypedef map<PII, bool> MPIIB;\r\n\r\n\r\n\/** I\/O Accelerator **\/\r\n\r\n\/* ... :" We are I\/O Accelerator ... Use us at your own risk ;) ... " .. *\/\r\n\r\ntemplate<class T> inline void RD(T &);\r\ntemplate<class T> inline void OT(const T &);\r\n\r\ninline int RD(){ int x; RD(x); return x;}\r\ntemplate<class T> inline T& _RD(T &x){ RD(x); return x;}\r\ninline void RC(char &c){scanf(" %c", &c);}\r\ninline void RS(char *s){scanf("%s", s);}\r\n\r\ntemplate<class T0, class T1> inline void RD(T0 &x0, T1 &x1){RD(x0), RD(x1);}\r\ntemplate<class T0, class T1, class T2> inline void RD(T0 &x0, T1 &x1, T2 &x2){RD(x0), RD(x1), RD(x2);}\r\ntemplate<class T0, class T1, class T2, class T3> inline void RD(T0 &x0, T1 &x1, T2 &x2, T3 &x3){RD(x0), RD(x1), RD(x2), RD(x3);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4> inline void RD(T0 &x0, T1 &x1, T2 &x2, T3 &x3, T4 &x4){RD(x0), RD(x1), RD(x2), RD(x3), RD(x4);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5> inline void RD(T0 &x0, T1 &x1, T2 &x2, T3 &x3, T4 &x4, T5 &x5){RD(x0), RD(x1), RD(x2), RD(x3), RD(x4), RD(x5);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5, class T6> inline void RD(T0 &x0, T1 &x1, T2 &x2, T3 &x3, T4 &x4, T5 &x5, T6 &x6){RD(x0), RD(x1), RD(x2), RD(x3), RD(x4), RD(x5), RD(x6);}\r\ntemplate<class T0, class T1> inline void OT(T0 &x0, T1 &x1){OT(x0), OT(x1);}\r\ntemplate<class T0, class T1, class T2> inline void OT(T0 &x0, T1 &x1, T2 &x2){OT(x0), OT(x1), OT(x2);}\r\ntemplate<class T0, class T1, class T2, class T3> inline void OT(T0 &x0, T1 &x1, T2 &x2, T3 &x3){OT(x0), OT(x1), OT(x2), OT(x3);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4> inline void OT(T0 &x0, T1 &x1, T2 &x2, T3 &x3, T4 &x4){OT(x0), OT(x1), OT(x2), OT(x3), OT(x4);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5> inline void OT(T0 &x0, T1 &x1, T2 &x2, T3 &x3, T4 &x4, T5 &x5){OT(x0), OT(x1), OT(x2), OT(x3), OT(x4), OT(x5);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5, class T6> inline void OT(T0 &x0, T1 &x1, T2 &x2, T3 &x3, T4 &x4, T5 &x5, T6 &x6){OT(x0), OT(x1), OT(x2), OT(x3), OT(x4), OT(x5), OT(x6);}\r\n\r\ntemplate<class T> inline void RST(T &A){memset(A, 0, sizeof(A));}\r\ntemplate<class T0, class T1> inline void RST(T0 &A0, T1 &A1){RST(A0), RST(A1);}\r\ntemplate<class T0, class T1, class T2> inline void RST(T0 &A0, T1 &A1, T2 &A2){RST(A0), RST(A1), RST(A2);}\r\ntemplate<class T0, class T1, class T2, class T3> inline void RST(T0 &A0, T1 &A1, T2 &A2, T3 &A3){RST(A0), RST(A1), RST(A2), RST(A3);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4> inline void RST(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4){RST(A0), RST(A1), RST(A2), RST(A3), RST(A4);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5> inline void RST(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4, T5 &A5){RST(A0), RST(A1), RST(A2), RST(A3), RST(A4), RST(A5);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5, class T6> inline void RST(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4, T5 &A5, T6 &A6){RST(A0), RST(A1), RST(A2), RST(A3), RST(A4), RST(A5), RST(A6);}\r\ntemplate<class T> inline void CLR(T &A){A.clear();}\r\ntemplate<class T0, class T1> inline void CLR(T0 &A0, T1 &A1){CLR(A0), CLR(A1);}\r\ntemplate<class T0, class T1, class T2> inline void CLR(T0 &A0, T1 &A1, T2 &A2){CLR(A0), CLR(A1), CLR(A2);}\r\ntemplate<class T0, class T1, class T2, class T3> inline void CLR(T0 &A0, T1 &A1, T2 &A2, T3 &A3){CLR(A0), CLR(A1), CLR(A2), CLR(A3);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4> inline void CLR(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4){CLR(A0), CLR(A1), CLR(A2), CLR(A3), CLR(A4);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5> inline void CLR(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4, T5 &A5){CLR(A0), CLR(A1), CLR(A2), CLR(A3), CLR(A4), CLR(A5);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5, class T6> inline void CLR(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4, T5 &A5, T6 &A6){CLR(A0), CLR(A1), CLR(A2), CLR(A3), CLR(A4), CLR(A5), CLR(A6);}\r\ntemplate<class T> inline void CLR(T &A, int n){REP(i, n) CLR(A[i]);}\r\ntemplate<class T> inline void FLC(T &A, int x){memset(A, x, sizeof(A));}\r\ntemplate<class T0, class T1> inline void FLC(T0 &A0, T1 &A1, int x){FLC(A0, x), FLC(A1, x);}\r\ntemplate<class T0, class T1, class T2> inline void FLC(T0 &A0, T1 &A1, T2 &A2){FLC(A0), FLC(A1), FLC(A2);}\r\ntemplate<class T0, class T1, class T2, class T3> inline void FLC(T0 &A0, T1 &A1, T2 &A2, T3 &A3){FLC(A0), FLC(A1), FLC(A2), FLC(A3);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4> inline void FLC(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4){FLC(A0), FLC(A1), FLC(A2), FLC(A3), FLC(A4);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5> inline void FLC(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4, T5 &A5){FLC(A0), FLC(A1), FLC(A2), FLC(A3), FLC(A4), FLC(A5);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5, class T6> inline void FLC(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4, T5 &A5, T6 &A6){FLC(A0), FLC(A1), FLC(A2), FLC(A3), FLC(A4), FLC(A5), FLC(A6);}\r\n\r\ntemplate<class T> inline void SRT(T &A){sort(ALL(A));}\r\ntemplate<class T, class C> inline void SRT(T &A, C B){sort(ALL(A), B);}\r\n\r\n\r\n\/** Add - On **\/\r\n\r\nint MOD;\r\nconst int INF = 0x7fffffff;\r\nconst DB PI = acos(-1.0);\r\nconst DB EPS = 1e-6;\r\nconst DB OO = 1e15;\r\n\r\n\/\/ <<= ` 0. Daily Use .,\r\n\r\ntemplate<class T> inline void checkMin(T &a,const T b){if (b<a) a=b;}\r\ntemplate<class T> inline void checkMax(T &a,const T b){if (b>a) a=b;}\r\ntemplate <class T, class C> inline void checkMin(T& a, const T b, C c){if (c(b,a)) a = b;}\r\ntemplate <class T, class C> inline void checkMax(T& a, const T b, C c){if (c(a,b)) a = b;}\r\ntemplate<class T> inline T min(T a, T b, T c){return min(min(a, b), c);}\r\ntemplate<class T> inline T max(T a, T b, T c){return max(max(a, b), c);}\r\ntemplate<class T> inline T sqr(T a){return a*a;}\r\ntemplate<class T> inline T cub(T a){return a*a*a;}\r\nLL Ceil(LL x, LL y){return x ? (x - 1) \/ y + 1 : 0;}\r\n\r\n\/\/ <<= ` 1. Bitwise Operation .,\r\n\r\ninline bool _1(int x, int i){return x & 1<<i;}\r\ninline LL _1(int i){return 1LL<<i;}\r\ninline int _U(int i){return _1(i) - 1;};\r\n\r\ninline int count_bits(int x){\r\n x = (x & 0x55555555) + ((x & 0xaaaaaaaa) >> 1);\r\n x = (x & 0x33333333) + ((x & 0xcccccccc) >> 2);\r\n x = (x & 0x0f0f0f0f) + ((x & 0xf0f0f0f0) >> 4);\r\n x = (x & 0x00ff00ff) + ((x & 0xff00ff00) >> 8);\r\n x = (x & 0x0000ffff) + ((x & 0xffff0000) >> 16);\r\n return x;\r\n}\r\n\r\ntemplate<class T> inline T low_bit(T x) {\r\n return x & -x;\r\n}\r\n\r\ntemplate<class T> inline T high_bit(T x) {\r\n T p = low_bit(x);\r\n while (p != x) x -= p, p = low_bit(x);\r\n return p;\r\n}\r\n\r\n\/\/ <<= ` 2. Modular Arithmetic Basic .,\r\n\r\ninline void INC(int &a, int b){\r\n a += b; if (a >= MOD) a -= MOD;\r\n}\r\ninline int sum(int a, int b){a += b; if (a >= MOD) a -= MOD; return a;}\r\ninline void DEC(int &a, int b){a -= b; if (a < 0) a += MOD;}\r\ninline int dff(int a, int b){a -= b; if (a < 0) a += MOD; return a;}\r\ninline void MUL(int &a, int b){a = (LL)a * b % MOD;}\r\ninline int pdt(int a, int b){return (LL)a * b % MOD;}\r\n\r\n\r\n\/\/ <<= ' 0. I\/O Accelerator interface .,\r\n\r\ntemplate<class T> inline void RD(T &x){\r\n \/\/cin >> x;\r\n \/\/scanf("%I64d", &x);\r\n char c; for (c = getchar(); c < '0'; c = getchar()); x = c - '0'; for (c = getchar(); c >= '0'; c = getchar()) x = x * 10 + c - '0';\r\n \/\/char c; c = getchar(); x = c - '0'; for (c = getchar(); c >= '0'; c = getchar()) x = x * 10 + c - '0';\r\n\r\n}\r\n\r\nint ____Case;\r\ntemplate<class T> inline void OT(const T &x){\r\n \/\/cout << x << endl;\r\n printf("%d\\n", x);\r\n \/\/printf("%.2lf\\n", x);\r\n \/\/printf("Case %d: %d\\n", ++____Case, x);\r\n}\r\n\r\n\r\n#define For_each(it, A) for (SII::iterator it = A.begin(); it != A.end(); ++it)\r\n\r\n\/* .................................................................................................................................. *\/\r\n\r\n\r\nLL n, a, b, u, v, an, k, ll, rr;\r\nint m, res;\r\n\r\nint s(LL a, LL b){\r\n if (a&1) b>>=1; else a>>=1; a %= MOD, b %= MOD;\r\n return pdt(a, b);\r\n}\r\n\r\nvoid Query(LL d = 1, LL l = 1, LL r = n, LL a0 = 1){\r\n if (a <= l && r <= b){\r\n an = a0 + (r - l) * d, ll = max(u, a0), rr = min(v, an);\r\n ll = a0 + Ceil(ll - a0, d) * d, rr = an - Ceil(an - rr, d) * d;\r\n if (ll <= rr) INC(res, s(ll + rr, (rr - ll) \/ d + 1));\r\n }\r\n else {\r\n LL m = (l + r) >> 1;\r\n if (a <= m) Query(d << 1, l, m, a0);\r\n if (m < b) Query(d << 1, m + 1, r, a0 + d);\r\n }\r\n}\r\n\r\nint main(){\r\n\r\n RD(n, m, MOD);\r\n\r\n DO(m){\r\n RD(a, b, u, v), res = 0, Query();\r\n OT(res);\r\n }\r\n}\r\n<\/pre>\n\r\n\/** ` Micro Mezzo Macro Flation -- Overheated Economy ., **\/\r\n\r\n#include <algorithm>\r\n#include <iostream>\r\n#include <iomanip>\r\n#include <sstream>\r\n#include <cstring>\r\n#include <cstdio>\r\n#include <string>\r\n#include <vector>\r\n#include <bitset>\r\n#include <queue>\r\n#include <stack>\r\n#include <cmath>\r\n#include <ctime>\r\n#include <list>\r\n#include <set>\r\n#include <map>\r\n\r\nusing namespace std;\r\n\r\n#define REP(i, n) for (int i=0;i<int(n);++i)\r\n#define FOR(i, a, b) for (int i=int(a);i<int(b);++i)\r\n#define DWN(i, b, a) for (int i=int(b-1);i>=int(a);--i)\r\n#define REP_1(i, n) for (int i=1;i<=int(n);++i)\r\n#define FOR_1(i, a, b) for (int i=int(a);i<=int(b);++i)\r\n#define DWN_1(i, b, a) for (int i=int(b);i>=int(a);--i)\r\n#define REP_C(i, n) for (int n____=int(n),i=0;i<n____;++i)\r\n#define FOR_C(i, a, b) for (int b____=int(b),i=a;i<b____;++i)\r\n#define DWN_C(i, b, a) for (int a____=int(a),i=b-1;i>=a____;--i)\r\n#define REP_N(i, n) for (i=0;i<int(n);++i)\r\n#define FOR_N(i, a, b) for (i=int(a);i<int(b);++i)\r\n#define DWN_N(i, b, a) for (i=int(b-1);i>=int(a);--i)\r\n#define REP_1_C(i, n) for (int n____=int(n),i=1;i<=n____;++i)\r\n#define FOR_1_C(i, a, b) for (int b____=int(b),i=a;i<=b____;++i)\r\n#define DWN_1_C(i, b, a) for (int a____=int(a),i=b;i>=a____;--i)\r\n#define REP_1_N(i, n) for (i=1;i<=int(n);++i)\r\n#define FOR_1_N(i, a, b) for (i=int(a);i<=int(b);++i)\r\n#define DWN_1_N(i, b, a) for (i=int(b);i>=int(a);--i)\r\n#define REP_C_N(i, n) for (n____=int(n),i=0;i<n____;++i)\r\n#define FOR_C_N(i, a, b) for (b____=int(b),i=a;i<b____;++i)\r\n#define DWN_C_N(i, b, a) for (a____=int(a),i=b-1;i>=a____;--i)\r\n#define REP_1_C_N(i, n) for (n____=int(n),i=1;i<=n____;++i)\r\n#define FOR_1_C_N(i, a, b) for (b____=int(b),i=a;i<=b____;++i)\r\n#define DWN_1_C_N(i, b, a) for (a____=int(a),i=b;i>=a____;--i)\r\n\r\n#define DO(n) while(n--)\r\n#define DO_C(n) int n____ = n; while(n____--)\r\n#define TO(i, a, b) int s_=a<b?1:-1,b_=b+s_;for(int i=a;i!=b_;i+=s_)\r\n#define TO_1(i, a, b) int s_=a<b?1:-1,b_=b;for(int i=a;i!=b_;i+=s_)\r\n#define SQZ(i, j, a, b) for (int i=int(a),j=int(b)-1;i<j;++i,--j)\r\n#define SQZ_1(i, j, a, b) for (int i=int(a),j=int(b);i<=j;++i,--j)\r\n#define REP_2(i, j, n, m) REP(i, n) REP(j, m)\r\n#define REP_2_1(i, j, n, m) REP_1(i, n) REP_1(j, m)\r\n\r\n#define ALL(A) A.begin(), A.end()\r\n#define LLA(A) A.rbegin(), A.rend()\r\n#define CPY(A, B) memcpy(A, B, sizeof(A))\r\n#define INS(A, P, B) A.insert(A.begin() + P, B)\r\n#define ERS(A, P) A.erase(A.begin() + P)\r\n#define BSC(A, X) find(ALL(A), X) \/\/ != A.end()\r\n#define CTN(T, x) (T.find(x) != T.end())\r\n#define SZ(A) int(A.size())\r\n#define PB push_back\r\n#define MP(A, B) make_pair(A, B)\r\n\r\n#define Rush int T____; RD(T____); DO(T____)\r\n#pragma comment(linker, "\/STACK:36777216")\r\n#pragma GCC optimize ("O2")\r\n#define Ruby system("ruby main.rb")\r\n#define Haskell system("runghc main.hs")\r\n#define Pascal system("fpc main.pas")\r\n\r\ntypedef long long LL;\r\ntypedef double DB;\r\ntypedef unsigned UINT;\r\ntypedef unsigned long long ULL;\r\n\r\ntypedef vector<int> VI;\r\ntypedef vector<char> VC;\r\ntypedef vector<string> VS;\r\ntypedef vector<LL> VL;\r\ntypedef vector<DB> VD;\r\ntypedef set<int> SI;\r\ntypedef set<string> SS;\r\ntypedef set<LL> SL;\r\ntypedef set<DB> SD;\r\ntypedef map<int, int> MII;\r\ntypedef map<string, int> MSI;\r\ntypedef map<LL, int> MLI;\r\ntypedef map<DB, int> MDI;\r\ntypedef map<int, bool> MIB;\r\ntypedef map<string, bool> MSB;\r\ntypedef map<LL, bool> MLB;\r\ntypedef map<DB, bool> MDB;\r\ntypedef pair<int, int> PII;\r\ntypedef pair<int, bool> PIB;\r\ntypedef vector<PII> VII;\r\ntypedef vector<VI> VVI;\r\ntypedef vector<VII> VVII;\r\ntypedef set<PII> SII;\r\ntypedef map<PII, int> MPIII;\r\ntypedef map<PII, bool> MPIIB;\r\n\r\n\r\n\/** I\/O Accelerator **\/\r\n\r\n\/* ... :" We are I\/O Accelerator ... Use us at your own risk ;) ... " .. *\/\r\n\r\ntemplate<class T> inline void RD(T &);\r\ntemplate<class T> inline void OT(const T &);\r\n\r\ninline int RD(){ int x; RD(x); return x;}\r\ntemplate<class T> inline T& _RD(T &x){ RD(x); return x;}\r\ninline void RC(char &c){scanf(" %c", &c);}\r\ninline void RS(char *s){scanf("%s", s);}\r\n\r\ntemplate<class T0, class T1> inline void RD(T0 &x0, T1 &x1){RD(x0), RD(x1);}\r\ntemplate<class T0, class T1, class T2> inline void RD(T0 &x0, T1 &x1, T2 &x2){RD(x0), RD(x1), RD(x2);}\r\ntemplate<class T0, class T1, class T2, class T3> inline void RD(T0 &x0, T1 &x1, T2 &x2, T3 &x3){RD(x0), RD(x1), RD(x2), RD(x3);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4> inline void RD(T0 &x0, T1 &x1, T2 &x2, T3 &x3, T4 &x4){RD(x0), RD(x1), RD(x2), RD(x3), RD(x4);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5> inline void RD(T0 &x0, T1 &x1, T2 &x2, T3 &x3, T4 &x4, T5 &x5){RD(x0), RD(x1), RD(x2), RD(x3), RD(x4), RD(x5);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5, class T6> inline void RD(T0 &x0, T1 &x1, T2 &x2, T3 &x3, T4 &x4, T5 &x5, T6 &x6){RD(x0), RD(x1), RD(x2), RD(x3), RD(x4), RD(x5), RD(x6);}\r\ntemplate<class T0, class T1> inline void OT(T0 &x0, T1 &x1){OT(x0), OT(x1);}\r\ntemplate<class T0, class T1, class T2> inline void OT(T0 &x0, T1 &x1, T2 &x2){OT(x0), OT(x1), OT(x2);}\r\ntemplate<class T0, class T1, class T2, class T3> inline void OT(T0 &x0, T1 &x1, T2 &x2, T3 &x3){OT(x0), OT(x1), OT(x2), OT(x3);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4> inline void OT(T0 &x0, T1 &x1, T2 &x2, T3 &x3, T4 &x4){OT(x0), OT(x1), OT(x2), OT(x3), OT(x4);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5> inline void OT(T0 &x0, T1 &x1, T2 &x2, T3 &x3, T4 &x4, T5 &x5){OT(x0), OT(x1), OT(x2), OT(x3), OT(x4), OT(x5);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5, class T6> inline void OT(T0 &x0, T1 &x1, T2 &x2, T3 &x3, T4 &x4, T5 &x5, T6 &x6){OT(x0), OT(x1), OT(x2), OT(x3), OT(x4), OT(x5), OT(x6);}\r\n\r\ntemplate<class T> inline void RST(T &A){memset(A, 0, sizeof(A));}\r\ntemplate<class T0, class T1> inline void RST(T0 &A0, T1 &A1){RST(A0), RST(A1);}\r\ntemplate<class T0, class T1, class T2> inline void RST(T0 &A0, T1 &A1, T2 &A2){RST(A0), RST(A1), RST(A2);}\r\ntemplate<class T0, class T1, class T2, class T3> inline void RST(T0 &A0, T1 &A1, T2 &A2, T3 &A3){RST(A0), RST(A1), RST(A2), RST(A3);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4> inline void RST(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4){RST(A0), RST(A1), RST(A2), RST(A3), RST(A4);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5> inline void RST(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4, T5 &A5){RST(A0), RST(A1), RST(A2), RST(A3), RST(A4), RST(A5);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5, class T6> inline void RST(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4, T5 &A5, T6 &A6){RST(A0), RST(A1), RST(A2), RST(A3), RST(A4), RST(A5), RST(A6);}\r\ntemplate<class T> inline void CLR(T &A){A.clear();}\r\ntemplate<class T0, class T1> inline void CLR(T0 &A0, T1 &A1){CLR(A0), CLR(A1);}\r\ntemplate<class T0, class T1, class T2> inline void CLR(T0 &A0, T1 &A1, T2 &A2){CLR(A0), CLR(A1), CLR(A2);}\r\ntemplate<class T0, class T1, class T2, class T3> inline void CLR(T0 &A0, T1 &A1, T2 &A2, T3 &A3){CLR(A0), CLR(A1), CLR(A2), CLR(A3);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4> inline void CLR(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4){CLR(A0), CLR(A1), CLR(A2), CLR(A3), CLR(A4);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5> inline void CLR(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4, T5 &A5){CLR(A0), CLR(A1), CLR(A2), CLR(A3), CLR(A4), CLR(A5);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5, class T6> inline void CLR(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4, T5 &A5, T6 &A6){CLR(A0), CLR(A1), CLR(A2), CLR(A3), CLR(A4), CLR(A5), CLR(A6);}\r\ntemplate<class T> inline void CLR(T &A, int n){REP(i, n) CLR(A[i]);}\r\ntemplate<class T> inline void FLC(T &A, int x){memset(A, x, sizeof(A));}\r\ntemplate<class T0, class T1> inline void FLC(T0 &A0, T1 &A1, int x){FLC(A0, x), FLC(A1, x);}\r\ntemplate<class T0, class T1, class T2> inline void FLC(T0 &A0, T1 &A1, T2 &A2){FLC(A0), FLC(A1), FLC(A2);}\r\ntemplate<class T0, class T1, class T2, class T3> inline void FLC(T0 &A0, T1 &A1, T2 &A2, T3 &A3){FLC(A0), FLC(A1), FLC(A2), FLC(A3);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4> inline void FLC(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4){FLC(A0), FLC(A1), FLC(A2), FLC(A3), FLC(A4);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5> inline void FLC(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4, T5 &A5){FLC(A0), FLC(A1), FLC(A2), FLC(A3), FLC(A4), FLC(A5);}\r\ntemplate<class T0, class T1, class T2, class T3, class T4, class T5, class T6> inline void FLC(T0 &A0, T1 &A1, T2 &A2, T3 &A3, T4 &A4, T5 &A5, T6 &A6){FLC(A0), FLC(A1), FLC(A2), FLC(A3), FLC(A4), FLC(A5), FLC(A6);}\r\n\r\ntemplate<class T> inline void SRT(T &A){sort(ALL(A));}\r\ntemplate<class T, class C> inline void SRT(T &A, C B){sort(ALL(A), B);}\r\n\r\n\r\n\/** Add - On **\/\r\n\r\nconst int MOD = 1000000007;\r\nconst int INF = 0x7fffffff;\r\nconst DB PI = acos(-1.0);\r\nconst DB EPS = 1e-6;\r\nconst DB OO = 1e15;\r\n\r\n\/\/ <<= ` 0. Daily Use .,\r\n\r\ntemplate<class T> inline void checkMin(T &a,const T b){if (b<a) a=b;}\r\ntemplate<class T> inline void checkMax(T &a,const T b){if (b>a) a=b;}\r\ntemplate <class T, class C> inline void checkMin(T& a, const T b, C c){if (c(b,a)) a = b;}\r\ntemplate <class T, class C> inline void checkMax(T& a, const T b, C c){if (c(a,b)) a = b;}\r\ntemplate<class T> inline T min(T a, T b, T c){return min(min(a, b), c);}\r\ntemplate<class T> inline T max(T a, T b, T c){return max(max(a, b), c);}\r\ntemplate<class T> inline T sqr(T a){return a*a;}\r\ntemplate<class T> inline T cub(T a){return a*a*a;}\r\nint Ceil(int x, int y){return (x - 1) \/ y + 1;}\r\n\r\n\/\/ <<= ` 1. Bitwise Operation .,\r\n\r\ninline bool _1(int x, int i){return x & 1<<i;}\r\ninline int _1(int i){return 1<<i;}\r\ninline int _U(int i){return _1(i) - 1;};\r\n\r\ninline int count_bits(int x){\r\n x = (x & 0x55555555) + ((x & 0xaaaaaaaa) >> 1);\r\n x = (x & 0x33333333) + ((x & 0xcccccccc) >> 2);\r\n x = (x & 0x0f0f0f0f) + ((x & 0xf0f0f0f0) >> 4);\r\n x = (x & 0x00ff00ff) + ((x & 0xff00ff00) >> 8);\r\n x = (x & 0x0000ffff) + ((x & 0xffff0000) >> 16);\r\n return x;\r\n}\r\n\r\ntemplate<class T> inline T low_bit(T x) {\r\n return x & -x;\r\n}\r\n\r\ntemplate<class T> inline T high_bit(T x) {\r\n T p = low_bit(x);\r\n while (p != x) x -= p, p = low_bit(x);\r\n return p;\r\n}\r\n\r\n\/\/ <<= ` 2. Modular Arithmetic Basic .,\r\n\r\ninline void INC(int &a, int b){a += b; if (a >= MOD) a -= MOD;}\r\ninline int sum(int a, int b){a += b; if (a >= MOD) a -= MOD; return a;}\r\ninline void DEC(int &a, int b){a -= b; if (a < 0) a += MOD;}\r\ninline int dff(int a, int b){a -= b; if (a < 0) a += MOD; return a;}\r\ninline void MUL(int &a, int b){a = (LL)a * b % MOD;}\r\ninline int pdt(int a, int b){return (LL)a * b % MOD;}\r\n\r\n\r\n\/\/ <<= ' 0. I\/O Accelerator interface .,\r\n\r\ntemplate<class T> inline void RD(T &x){\r\n \/\/cin >> x;\r\n scanf("%d", &x);\r\n \/\/char c; for (c = getchar(); c < '0'; c = getchar()); x = c - '0'; for (c = getchar(); c >= '0'; c = getchar()) x = x * 10 + c - '0';\r\n \/\/char c; c = getchar(); x = c - '0'; for (c = getchar(); c >= '0'; c = getchar()) x = x * 10 + c - '0';\r\n\r\n}\r\n\r\n\/\/int ____Case;\r\ntemplate<class T> inline void OT(const T &x){\r\n \/\/cout << x << endl;\r\n printf("%d\\n", x);\r\n \/\/printf("%.2lf\\n", x);\r\n \/\/printf("Case %d: %d\\n", ++____Case, x);\r\n}\r\n\r\n\r\n#define For_each(it, A) for (SII::iterator it = A.begin(); it != A.end(); ++it)\r\n\r\n\/* .................................................................................................................................. *\/\r\n\r\nconst int N = 100001, M = 2 * N;\r\n\r\nint l[N], r[N], p[N], w0[N], w1[N], w2[N], rev[N], rt[N];\r\n\/\/ Link-cut tree\r\nint hd[N], nxt[M], del[M], b[M];\r\n\/\/ Adjacent list\r\nint cir[N], idx[N], rmv, cn;\r\n\/\/ the Circle, the Removed Edge ..\r\nint P[N]; int Find(int x){return P[x] == x ? x : P[x] = Find(P[x]);}\r\n\/\/ a union-find-set used to link to the Circle from a normal node .\r\nint n, m, cpt;\r\n\r\n#define root cir[0]\r\n#define lx l[x]\r\n#define rx r[x]\r\n\r\n\r\ninline void Rev(int x){\r\n if (x == 0) return;\r\n\r\n w0[x] ^= 1, swap(w1[x], w2[x]), rev[x] ^= 1;\r\n}\r\n\r\ninline void Release(int x){\r\n if (x == 0) return;\r\n\r\n if (rev[x]){\r\n Rev(lx), Rev(rx), rev[x] = 0;\r\n }\r\n}\r\n\r\ninline void Update(int x){\r\n w1[x] = w1[lx] + w1[rx] + w0[x];\r\n w2[x] = w2[lx] + w2[rx] + (w0[x] ^ 1);\r\n}\r\n\r\ninline void Set(int l[], int y, int x){\r\n l[y] = x, p[x] = y;\r\n}\r\n\r\n#define z p[y]\r\ninline void Rotate(int x){\r\n int y = p[x];\r\n\r\n if (!rt[y]) Release(z), Set(y == l[z] ? l : r, z, x);\r\n else p[x] = z;\r\n\r\n Release(y), Release(x);\r\n\r\n if (x == l[y]) Set(l, y, rx), Set(r, x, y);\r\n else Set(r, y, lx), Set(l, x, y);\r\n\r\n if (rt[y]) rt[y] = false, rt[x] = true;\r\n Update(y);\r\n}\r\n\r\ninline void Splay(int x){\r\n while (!rt[x]) Rotate(x);\r\n}\r\n\r\nvoid Access(int x){\r\n int y = 0; do{\r\n Splay(x), Release(x);\r\n rt[rx] = true, rt[rx = y] = false, Update(x);\r\n x = p[y = x];\r\n } while (x);\r\n}\r\n\r\n\/\/ Public:\r\n\r\nvoid Reverse(int x){\r\n Access(x), Splay(x = root);\r\n cpt += w1[rx] - w2[rx], Rev(rx);\r\n}\r\n\r\ninline int C(){\r\n int x; Access(cir[1]), Splay(x = root);\r\n return w1[rx] + rmv;\r\n}\r\n\r\n#define v b[i]\r\n#define stk p\r\n#define vis rt\r\n\r\nint top;\r\ninline void dfs1(int u = 1){\r\n\r\n vis[stk[++top] = u] = top;\r\n\r\n for (int i=hd[u];i;i=nxt[i]) if (!del[i]){\r\n\r\n del[i^1] = true;\r\n\r\n if (vis[v]){\r\n FOR_1(j, vis[v], top) idx[cir[++cn] = stk[j]] = cn;\r\n cir[0] = cir[cn], cir[cn + 1] = cir[1], rmv = i >> 1;\r\n }\r\n else{\r\n dfs1(v);\r\n }\r\n }\r\n\r\n --top;\r\n}\r\ninline void dfs2(int u = root){\r\n for(int i=hd[u];i;i=nxt[i]) if (i>>1!=rmv && !p[v]){\r\n p[v] = u, dfs2(v);\r\n }\r\n}\r\n\r\n#define v1 (idx[P[a]] < idx[P[b]] ? cir[idx[P[a]] + 1] : cir[idx[P[a]] - 1])\r\n#define v2 (idx[P[a]] < idx[P[b]] ? cir[idx[P[a]] - 1] : cir[idx[P[a]] + 1])\r\n#define l1 abs(idx[P[a]] - idx[P[b]])\r\n#define l2 (cn - l1)\r\n\r\nint main(){\r\n\r\n \/\/freopen("in.txt", "r", stdin);\r\n \/\/freopen("out.txt", "w", stdout);\r\n \/\/ios::sync_with_stdio(false);\r\n\r\n RD(n, m); FOR_1_C(i, 2, n << 1){\r\n RD(b[i|1], b[i]), nxt[i] = hd[b[i|1]], hd[b[i|1]] = i;\r\n nxt[i|1] = hd[b[i]], hd[b[i]] = i|1, ++i;\r\n }\r\n\r\n dfs1(), RST(p), p[root] = -1, dfs2(), p[root] = 0;\r\n REP_1(i, n) P[i] = idx[i] ? i : p[i];\r\n REP_1(i, n) Find(i); cpt = n, rmv = 0;\r\n\r\n int a, b; DO(m){\r\n\r\n RD(a, b), Reverse(a), Reverse(b);\r\n\r\n if (l1 > l2 || l1 == l2 && v1 > v2){\r\n rmv ^= 1, cpt -= rmv ? 1 : -1;\r\n Reverse(cir[1]);\r\n }\r\n\r\n OT(cpt + (C()==cn));\r\n }\r\n}\r\n\r\n<\/pre>\nExternal Link:<\/h3>\n
\nhttp:\/\/blog.csdn.net\/jasonzhu8\/article\/details\/6817352<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"