{"id":143,"date":"2010-03-06T15:40:00","date_gmt":"2010-03-06T07:40:00","guid":{"rendered":"http:\/\/localhost\/?p=143"},"modified":"2010-03-06T15:40:00","modified_gmt":"2010-03-06T07:40:00","slug":"hnoi2006_bu_distance","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/wjmzbmr\/?p=143","title":{"rendered":"[HNOI2006]\u9a6c\u6b65\u8ddd\u79bb"},"content":{"rendered":"

61.187.179.132:8080\/JudgeOnline\/showproblem<\/a>
\u6570\u636e\u90a3\u4e48\u5927\u66b4\u641c\u53ea\u80fd\u53bb\u6b7b\u3002\u3002
\u6211\u60f3\u5148\u8d2a\u5fc3\u7684\u8df3\u4e00\u4f1a\uff0c\u5f53\u8ddd\u79bb\u6bd4\u8f83\u8fd1\u7684\u65f6\u5019\u518d\u66b4\u641c\u3002
\u6211\u4e00\u5f00\u59cb\u60f3\u7684\u8d2a\u5fc3\u662f\u76f4\u63a5\u6309\u8ddd\u79bb\u3002\u3002\u7ed3\u679cWA\u3002\u3002
\u7136\u540e\u6211\u7f16\u6570\u636e\u627e\u539f\u56e0\u3002\u3002\u53d1\u73b0\u5bf9\u4e8e\u90a3\u4e9b\u6b63\u65b9\u5f62\u4e24\u4e2a\u5bf9\u89d2\u70b9\u6bd4\u59820 0 100 100\u7684\u6570\u636e\u9519\u7684\u5f88\u5389\u5bb3\u3002\u3002
\u7136\u540e\u6211\u611f\u89c9\u4f3c\u4e4e\u662f\u56e0\u4e3a\u8fd9\u6837\u8d2a\u5fc3\u7684\u8bdd\u4e00\u5f00\u59cb\u5c31\u4f1a\u5f80\u8fb9\u4e0a\u8df3\u3002\u3002\u4e0d\u987e\u540e\u6765\u7684\u60c5\u51b5\u3002
\u6240\u4ee5\u6211\u53c8\u52a0\u4e86\u4e2a\u6307\u6807\u5c31\u662f\u5982\u679c\u8ddd\u79bb\u4e00\u6837\uff0c\u90a3\u4e48\u6a2a\u7eb5\u8ddd\u79bb\u5dee\u5c0f\u7684\u66f4\u6709\u4f18\u5148\u6743\u3002\u5c31A\u6389\u4e86\u3002
Code\uff1a
#include<cstdio>
#include<iostream>
#include<algorithm>
#include<string>
#include<vector>
#include<cstring>
#include<queue>
#define rep(i,n) for(int i=0;i<n;i++)
#define pb push_back
using namespace std;
typedef pair<int,int> pi;
const pi D[]={pi(2,1),pi(1,2),pi(-1,2),pi(-2,1),pi(-2,-1),pi(-1,-2),pi(1,-2),pi(2,-1)};
const int inf=~0U>>1;
inline int abs(int x){return x<0?-x:x;}
inline pi dist(pi a,pi b)
{
int x=abs(a.first-b.first),y=abs(a.second-b.second);
return pi(x+y,abs(x-y));
}
pi operator+(const pi&a,const pi&b)
{
return pi(a.first+b.first,a.second+b.second);
}
ostream& operator<<(ostream& out,const pi&a)
{
out<<"("<<a.first<<","<<a.second<<")";
}
int main()
{
\/\/freopen("in","r",stdin);
pi a,b;int ans=0;
cin>>a.first>>a.second>>b.first>>b.second;
while (dist(a,b).first>10)
{
pi next,Min(inf,inf);
rep(i,8)
{
pi c=a+D[i];pi ncost=dist(c,b);
if(ncost<Min)
Min=ncost,next=c;
}
a=next,ans++;
}
int x=min(a.first,b.first),y=min(a.second,b.second);
pi c=pi(-x,-y);
a=a+c+pi(5,5);b=b+c+pi(5,5);
bool vis[100][100]={0};
int d[100][100];
vis[a.first][a.second]=true;
d[a.first][a.second]=0;
queue<pi> Q;Q.push(a);
while (Q.size())
{
pi t=Q.front();Q.pop();int cost=d[t.first][t.second];
if(t==b) break;
rep(i,8)
{
pi c=t+D[i];
if(c.first>=0&&c.first<100&&c.second>=0&&c.second<100)
if(!vis[c.first][c.second])
{
vis[c.first][c.second]=true;
d[c.first][c.second]=cost+1;
Q.push(c);
}
}
}
cout<<ans+d[b.first][b.second];
}<\/p>\n","protected":false},"excerpt":{"rendered":"

61.187.179.132:8080\/JudgeOnline\/showproblem\u6570\u636e\u90a3\u4e48\u5927\u66b4\u641c\u53ea\u80fd\u53bb\u6b7b\u3002\u3002\u6211\u60f3\u5148\u8d2a\u5fc3\u7684\u8df3\u4e00\u4f1a\uff0c\u5f53\u8ddd\u79bb\u6bd4\u8f83\u8fd1\u7684\u65f6\u5019\u518d\u66b4\u641c\u3002\u6211\u4e00\u5f00\u59cb\u60f3\u7684\u8d2a\u5fc3\u662f\u76f4\u63a5\u6309\u8ddd\u79bb\u3002\u3002\u7ed3\u679cWA\u3002\u3002\u7136\u540e\u6211\u7f16\u6570\u636e\u627e\u539f\u56e0\u3002\u3002\u53d1\u73b0\u5bf9\u4e8e\u90a3\u4e9b\u6b63\u65b9\u5f62\u4e24\u4e2a\u5bf9\u89d2\u70b9\u6bd4\u59820 0 100 100\u7684\u6570\u636e\u9519\u7684\u5f88\u5389\u5bb3\u3002\u3002\u7136\u540e\u6211\u611f\u89c9\u4f3c\u4e4e\u662f\u56e0\u4e3a\u8fd9\u6837\u8d2a\u5fc3\u7684\u8bdd\u4e00\u5f00\u59cb\u5c31\u4f1a\u5f80\u8fb9\u4e0a\u8df3\u3002\u3002\u4e0d\u987e\u540e\u6765\u7684\u60c5\u51b5\u3002\u6240\u4ee5\u6211\u53c8\u52a0\u4e86\u4e2a\u6307\u6807\u5c31\u662f\u5982\u679c\u8ddd\u79bb\u4e00\u6837\uff0c\u90a3\u4e48\u6a2a\u7eb5\u8ddd\u79bb\u5dee\u5c0f\u7684\u66f4\u6709\u4f18\u5148\u6743\u3002\u5c31A\u6389\u4e86\u3002Code\uff1a#include<cstdio>#include<iostream>#include<algorithm>#include<string>#include<vector>#include<cstring>#include<queue>#define rep(i,n) for(int i=0;i<n;i++)#define pb push_backusing namespace std;typedef pair<int,int> pi;const pi D[]={pi(2,1),pi(1,2),pi(-1,2),pi(-2,1),pi(-2,-1),pi(-1,-2),pi(1,-2),pi(2,-1)};const int inf=~0U>>1;inline int abs(int x){return x<0?-x:x;}inline pi dist(pi a,pi b){ int x=abs(a.first-b.first),y=abs(a.second-b.second); return pi(x+y,abs(x-y));}pi operator+(const pi&a,const pi&b){ return pi(a.first+b.first,a.second+b.second);}ostream& operator<<(ostream& out,const pi&a){ out<<"("<<a.first<<","<<a.second<<")";}int main(){ \/\/freopen("in","r",stdin); pi a,b;int ans=0; cin>>a.first>>a.second>>b.first>>b.second; while (dist(a,b).first>10) { pi next,Min(inf,inf); rep(i,8) { pi c=a+D[i];pi ncost=dist(c,b); if(ncost<Min) […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/143"}],"collection":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=143"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/143\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}