{"id":164,"date":"2010-03-19T22:05:00","date_gmt":"2010-03-19T14:05:00","guid":{"rendered":"http:\/\/localhost\/?p=164"},"modified":"2010-03-19T22:05:00","modified_gmt":"2010-03-19T14:05:00","slug":"hnoi2004_pet_adoption_by","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/wjmzbmr\/?p=164","title":{"rendered":"[HNOI2004]\u5ba0\u7269\u6536\u517b\u6240"},"content":{"rendered":"

61.187.179.132:8080\/JudgeOnline\/showproblem<\/a><\/p>\n

[HNOI2004]\u5ba0\u7269\u6536\u517b\u6240<\/p>\n

Time Limit:10000MS  Memory Limit:165536K
Total Submit:32 Accepted:20
Case Time Limit:1000MS<\/p>\n

Description <\/strong><\/p>\n

\u6700\u8fd1\uff0c\u963fQ\u5f00\u4e86\u4e00\u95f4\u5ba0\u7269\u6536\u517b\u6240\u3002\u6536\u517b\u6240\u63d0\u4f9b\u4e24\u79cd\u670d\u52a1\uff1a\u6536\u517b\u88ab\u4e3b\u4eba\u9057\u5f03\u7684\u5ba0\u7269\u548c\u8ba9\u65b0\u7684\u4e3b\u4eba\u9886\u517b\u8fd9\u4e9b\u5ba0\u7269\u3002
\u6bcf\u4e2a\u9886\u517b\u8005\u90fd\u5e0c\u671b\u9886\u517b\u5230\u81ea\u5df1\u6ee1\u610f\u7684\u5ba0\u7269\uff0c\u963fQ\u6839\u636e\u9886\u517b\u8005\u7684\u8981\u6c42\u901a\u8fc7\u4ed6\u81ea\u5df1\u53d1\u660e\u7684\u4e00\u4e2a\u7279\u6b8a\u7684\u516c\u5f0f\uff0c\u5f97\u51fa\u8be5\u9886\u517b\u8005\u5e0c\u671b\u9886\u517b\u7684\u5ba0\u7269\u7684\u7279\u70b9\u503ca\uff08a\u662f\u4e00\u4e2a \u6b63\u6574\u6570\uff0ca<2^31\uff09\uff0c\u800c\u4ed6\u4e5f\u7ed9\u6bcf\u4e2a\u5904\u5728\u6536\u517b\u6240\u7684\u5ba0\u7269\u4e00\u4e2a\u7279\u70b9\u503c\u3002\u8fd9\u6837\u4ed6\u5c31\u80fd\u591f\u5f88\u65b9\u4fbf\u7684\u5904\u7406\u6574\u4e2a\u9886\u517b\u5ba0\u7269\u7684\u8fc7\u7a0b\u4e86\uff0c\u5ba0\u7269\u6536\u517b\u6240\u603b\u662f\u4f1a\u6709\u4e24\u79cd\u60c5\u51b5\u53d1 \u751f\uff1a\u88ab\u9057\u5f03\u7684\u5ba0\u7269\u8fc7\u591a\u6216\u8005\u662f\u60f3\u8981\u6536\u517b\u5ba0\u7269\u7684\u4eba\u592a\u591a\uff0c\u800c\u5ba0\u7269\u592a\u5c11\u3002
1\uff0e \u88ab\u9057\u5f03\u7684\u5ba0\u7269\u8fc7\u591a\u65f6\uff0c\u5047\u82e5\u5230\u6765\u4e00\u4e2a\u9886\u517b\u8005\uff0c\u8fd9\u4e2a\u9886\u517b\u8005\u5e0c\u671b\u9886\u517b\u7684\u5ba0\u7269\u7684\u7279\u70b9\u503c\u4e3aa\uff0c\u90a3\u4e48\u5b83\u5c06\u4f1a\u9886\u517b\u4e00\u53ea\u76ee\u524d\u672a\u88ab\u9886\u517b\u7684\u5ba0\u7269\u4e2d\u7279\u70b9\u503c\u6700\u63a5\u8fd1a\u7684\u4e00\u53ea\u5ba0 \u7269\u3002\uff08\u4efb\u4f55\u4e24\u53ea\u5ba0\u7269\u7684\u7279\u70b9\u503c\u90fd\u4e0d\u53ef\u80fd\u662f\u76f8\u540c\u7684\uff0c\u4efb\u4f55\u4e24\u4e2a\u9886\u517b\u8005\u7684\u5e0c\u671b\u9886\u517b\u5ba0\u7269\u7684\u7279\u70b9\u503c\u4e5f\u4e0d\u53ef\u80fd\u662f\u4e00\u6837\u7684\uff09\u5982\u679c\u6709\u4e24\u53ea\u6ee1\u8db3\u8981\u6c42\u7684\u5ba0\u7269\uff0c\u5373\u5b58\u5728\u4e24\u53ea\u5ba0\u7269\u4ed6\u4eec\u7684 \u7279\u70b9\u503c\u5206\u522b\u4e3aa-b\u548ca+b\uff0c\u90a3\u4e48\u9886\u517b\u8005\u5c06\u4f1a\u9886\u517b\u7279\u70b9\u503c\u4e3aa-b\u7684\u90a3\u53ea\u5ba0\u7269\u3002
2\uff0e \u6536\u517b\u5ba0\u7269\u7684\u4eba\u8fc7\u591a\uff0c\u5047\u82e5\u5230\u6765\u4e00\u53ea\u88ab\u6536\u517b\u7684\u5ba0\u7269\uff0c\u90a3\u4e48\u54ea\u4e2a\u9886\u517b\u8005\u80fd\u591f\u9886\u517b\u5b83\u5462\uff1f\u80fd\u591f\u9886\u517b\u5b83\u7684\u9886\u517b\u8005\uff0c\u662f\u90a3\u4e2a\u5e0c\u671b\u88ab\u9886\u517b\u5ba0\u7269\u7684\u7279\u70b9\u503c\u6700\u63a5\u8fd1\u8be5\u5ba0\u7269\u7279\u70b9\u503c\u7684\u9886\u517b \u8005\uff0c\u5982\u679c\u8be5\u5ba0\u7269\u7684\u7279\u70b9\u503c\u4e3aa\uff0c\u5b58\u5728\u4e24\u4e2a\u9886\u517b\u8005\u4ed6\u4eec\u5e0c\u671b\u9886\u517b\u5ba0\u7269\u7684\u7279\u70b9\u503c\u5206\u522b\u4e3aa-b\u548ca+b\uff0c\u90a3\u4e48\u7279\u70b9\u503c\u4e3aa-b\u7684\u90a3\u4e2a\u9886\u517b\u8005\u5c06\u6210\u529f\u9886\u517b\u8be5\u5ba0\u7269\u3002 <\/p>\n

\u4e00\u4e2a\u9886\u517b\u8005\u9886\u517b\u4e86\u4e00\u4e2a\u7279\u70b9\u503c\u4e3aa\u7684\u5ba0\u7269\uff0c\u800c\u5b83\u672c\u8eab\u5e0c\u671b\u9886\u517b\u7684\u5ba0\u7269\u7684\u7279\u70b9\u503c\u4e3ab\uff0c\u90a3\u4e48\u8fd9\u4e2a\u9886\u517b\u8005\u7684\u4e0d\u6ee1\u610f\u7a0b\u5ea6\u4e3aabs(a-b)\u3002
\u3010\u4efb\u52a1\u63cf\u8ff0\u3011
\u4f60\u5f97\u5230\u4e86\u4e00\u5e74\u5f53\u4e2d\uff0c\u9886\u517b\u8005\u548c\u88ab\u6536\u517b\u5ba0\u7269\u5230\u6765\u6536\u517b\u6240\u7684\u60c5\u51b5\uff0c\u5e0c\u671b\u4f60\u8ba1\u7b97\u6240\u6709\u6536\u517b\u4e86\u5ba0\u7269\u7684\u9886\u517b\u8005\u7684\u4e0d\u6ee1\u610f\u7a0b\u5ea6\u7684\u603b\u548c\u3002\u8fd9\u4e00\u5e74\u521d\u59cb\u65f6\uff0c\u6536\u517b\u6240\u91cc\u9762\u65e2\u6ca1\u6709 \u5ba0\u7269\uff0c\u4e5f\u6ca1\u6709\u9886\u517b\u8005\u3002 <\/p>\n

Input <\/strong><\/p>\n

\u7b2c\u4e00\u884c\u4e3a\u4e00\u4e2a\u6b63\u6574\u6570n\uff0cn<=80000\uff0c\u8868\u793a\u4e00\u5e74\u5f53\u4e2d\u6765\u5230\u6536\u517b\u6240\u7684\u5ba0\u7269\u548c\u9886\u517b\u8005\u7684\u603b\u6570\u3002\u63a5\u4e0b\u6765\u7684n\u884c\uff0c\u6309\u5230\u6765\u65f6\u95f4\u7684\u5148\u540e\u987a\u5e8f\u63cf\u8ff0\u4e86\u4e00\u5e74\u5f53\u4e2d\u6765\u5230\u6536 \u517b\u6240\u7684\u5ba0\u7269\u548c\u9886\u517b\u8005\u7684\u60c5\u51b5\u3002\u6bcf\u884c\u6709\u4e24\u4e2a\u6b63\u6574\u6570a, b\uff0c\u5176\u4e2da=0\u8868\u793a\u5ba0\u7269\uff0ca=1\u8868\u793a\u9886\u517b\u8005\uff0cb\u8868\u793a\u5ba0\u7269\u7684\u7279\u70b9\u503c\u6216\u662f\u9886\u517b\u8005\u5e0c\u671b\u9886\u517b\u5ba0\u7269\u7684\u7279\u70b9\u503c\u3002\uff08\u540c\u4e00\u65f6\u95f4\u5446\u5728\u6536\u517b\u6240\u4e2d\u7684\uff0c\u8981\u4e48\u5168\u662f\u5ba0\u7269\uff0c\u8981\u4e48\u5168\u662f\u9886\u517b \u8005\uff0c\u8fd9\u4e9b\u5ba0\u7269\u548c\u9886\u517b\u8005\u7684\u4e2a\u6570\u4e0d\u4f1a\u8d85\u8fc710000\u4e2a\uff09 <\/p>\n

Output <\/strong><\/p>\n

\u4ec5\u6709\u4e00\u4e2a\u6b63\u6574\u6570\uff0c\u8868\u793a\u4e00\u5e74\u5f53\u4e2d\u6240\u6709\u6536\u517b\u4e86\u5ba0\u7269\u7684\u9886\u517b\u8005\u7684\u4e0d\u6ee1\u610f\u7a0b\u5ea6\u7684\u603b\u548cmod 1000000\u4ee5\u540e\u7684\u7ed3\u679c\u3002 <\/p>\n

Sample Input <\/strong><\/p>\n

5
0 2
0 4
1 3
1 2
1 5<\/p>\n

Sample Output <\/strong><\/p>\n

3
(abs(3-2) + abs(2-4)=3\uff0c\u6700\u540e\u4e00\u4e2a\u9886\u517b\u8005\u6ca1\u6709\u5ba0\u7269\u53ef\u4ee5\u9886\u517b)<\/p>\n

Source <\/strong><\/p>\n

\u5728set\u5b58\u5728\u7684\u60c5\u51b5\u4e0b\u8fd9\u662f\u4e00\u4e2a\u5927\u6c34\u9898\u4e3a\u4e86\u65b9\u4fbf\u63d2\u5165\u4e24\u4e2a\u65e0\u7a77\u8282\u70b9..\u957f\u5ea6\u6700\u77ed(*^__^*)
Code:
#include<cstdio>
#include<set>
using namespace std;
const int inf=~0U>>2;
typedef set<int>::iterator sit;
set<int> S;
int main()
{
int n,a,b,ans=0,type;
scanf("%d",&n);S.insert(inf);S.insert(-inf);
while(n–)
{
scanf("%d %d",&a,&b);
if(S.size()==2) type=a,S.insert(b);
else if(type==a) S.insert(b);
else
{
sit i=S.lower_bound(b);
int r=*i-b,l=b-*(–i);
if(l<=r) ans+=l,S.erase(i);
else ans+=r,S.erase(++i);
ans%=1000000;
}
}
printf("%dn",ans);
} <\/p>\n","protected":false},"excerpt":{"rendered":"

61.187.179.132:8080\/JudgeOnline\/showproblem [HNOI2004]\u5ba0\u7269\u6536\u517b\u6240 Time Limit:10000MS  Memory Limit:165536KTotal Submit:32 Accepted:20 Case Time Limit:1000MS Description \u6700\u8fd1\uff0c\u963fQ\u5f00\u4e86\u4e00\u95f4\u5ba0\u7269\u6536\u517b\u6240\u3002\u6536\u517b\u6240\u63d0\u4f9b\u4e24\u79cd\u670d\u52a1\uff1a\u6536\u517b\u88ab\u4e3b\u4eba\u9057\u5f03\u7684\u5ba0\u7269\u548c\u8ba9\u65b0\u7684\u4e3b\u4eba\u9886\u517b\u8fd9\u4e9b\u5ba0\u7269\u3002 \u6bcf\u4e2a\u9886\u517b\u8005\u90fd\u5e0c\u671b\u9886\u517b\u5230\u81ea\u5df1\u6ee1\u610f\u7684\u5ba0\u7269\uff0c\u963fQ\u6839\u636e\u9886\u517b\u8005\u7684\u8981\u6c42\u901a\u8fc7\u4ed6\u81ea\u5df1\u53d1\u660e\u7684\u4e00\u4e2a\u7279\u6b8a\u7684\u516c\u5f0f\uff0c\u5f97\u51fa\u8be5\u9886\u517b\u8005\u5e0c\u671b\u9886\u517b\u7684\u5ba0\u7269\u7684\u7279\u70b9\u503ca\uff08a\u662f\u4e00\u4e2a \u6b63\u6574\u6570\uff0ca<2^31\uff09\uff0c\u800c\u4ed6\u4e5f\u7ed9\u6bcf\u4e2a\u5904\u5728\u6536\u517b\u6240\u7684\u5ba0\u7269\u4e00\u4e2a\u7279\u70b9\u503c\u3002\u8fd9\u6837\u4ed6\u5c31\u80fd\u591f\u5f88\u65b9\u4fbf\u7684\u5904\u7406\u6574\u4e2a\u9886\u517b\u5ba0\u7269\u7684\u8fc7\u7a0b\u4e86\uff0c\u5ba0\u7269\u6536\u517b\u6240\u603b\u662f\u4f1a\u6709\u4e24\u79cd\u60c5\u51b5\u53d1 \u751f\uff1a\u88ab\u9057\u5f03\u7684\u5ba0\u7269\u8fc7\u591a\u6216\u8005\u662f\u60f3\u8981\u6536\u517b\u5ba0\u7269\u7684\u4eba\u592a\u591a\uff0c\u800c\u5ba0\u7269\u592a\u5c11\u3002 1\uff0e \u88ab\u9057\u5f03\u7684\u5ba0\u7269\u8fc7\u591a\u65f6\uff0c\u5047\u82e5\u5230\u6765\u4e00\u4e2a\u9886\u517b\u8005\uff0c\u8fd9\u4e2a\u9886\u517b\u8005\u5e0c\u671b\u9886\u517b\u7684\u5ba0\u7269\u7684\u7279\u70b9\u503c\u4e3aa\uff0c\u90a3\u4e48\u5b83\u5c06\u4f1a\u9886\u517b\u4e00\u53ea\u76ee\u524d\u672a\u88ab\u9886\u517b\u7684\u5ba0\u7269\u4e2d\u7279\u70b9\u503c\u6700\u63a5\u8fd1a\u7684\u4e00\u53ea\u5ba0 \u7269\u3002\uff08\u4efb\u4f55\u4e24\u53ea\u5ba0\u7269\u7684\u7279\u70b9\u503c\u90fd\u4e0d\u53ef\u80fd\u662f\u76f8\u540c\u7684\uff0c\u4efb\u4f55\u4e24\u4e2a\u9886\u517b\u8005\u7684\u5e0c\u671b\u9886\u517b\u5ba0\u7269\u7684\u7279\u70b9\u503c\u4e5f\u4e0d\u53ef\u80fd\u662f\u4e00\u6837\u7684\uff09\u5982\u679c\u6709\u4e24\u53ea\u6ee1\u8db3\u8981\u6c42\u7684\u5ba0\u7269\uff0c\u5373\u5b58\u5728\u4e24\u53ea\u5ba0\u7269\u4ed6\u4eec\u7684 \u7279\u70b9\u503c\u5206\u522b\u4e3aa-b\u548ca+b\uff0c\u90a3\u4e48\u9886\u517b\u8005\u5c06\u4f1a\u9886\u517b\u7279\u70b9\u503c\u4e3aa-b\u7684\u90a3\u53ea\u5ba0\u7269\u3002 2\uff0e \u6536\u517b\u5ba0\u7269\u7684\u4eba\u8fc7\u591a\uff0c\u5047\u82e5\u5230\u6765\u4e00\u53ea\u88ab\u6536\u517b\u7684\u5ba0\u7269\uff0c\u90a3\u4e48\u54ea\u4e2a\u9886\u517b\u8005\u80fd\u591f\u9886\u517b\u5b83\u5462\uff1f\u80fd\u591f\u9886\u517b\u5b83\u7684\u9886\u517b\u8005\uff0c\u662f\u90a3\u4e2a\u5e0c\u671b\u88ab\u9886\u517b\u5ba0\u7269\u7684\u7279\u70b9\u503c\u6700\u63a5\u8fd1\u8be5\u5ba0\u7269\u7279\u70b9\u503c\u7684\u9886\u517b \u8005\uff0c\u5982\u679c\u8be5\u5ba0\u7269\u7684\u7279\u70b9\u503c\u4e3aa\uff0c\u5b58\u5728\u4e24\u4e2a\u9886\u517b\u8005\u4ed6\u4eec\u5e0c\u671b\u9886\u517b\u5ba0\u7269\u7684\u7279\u70b9\u503c\u5206\u522b\u4e3aa-b\u548ca+b\uff0c\u90a3\u4e48\u7279\u70b9\u503c\u4e3aa-b\u7684\u90a3\u4e2a\u9886\u517b\u8005\u5c06\u6210\u529f\u9886\u517b\u8be5\u5ba0\u7269\u3002 \u4e00\u4e2a\u9886\u517b\u8005\u9886\u517b\u4e86\u4e00\u4e2a\u7279\u70b9\u503c\u4e3aa\u7684\u5ba0\u7269\uff0c\u800c\u5b83\u672c\u8eab\u5e0c\u671b\u9886\u517b\u7684\u5ba0\u7269\u7684\u7279\u70b9\u503c\u4e3ab\uff0c\u90a3\u4e48\u8fd9\u4e2a\u9886\u517b\u8005\u7684\u4e0d\u6ee1\u610f\u7a0b\u5ea6\u4e3aabs(a-b)\u3002 \u3010\u4efb\u52a1\u63cf\u8ff0\u3011 \u4f60\u5f97\u5230\u4e86\u4e00\u5e74\u5f53\u4e2d\uff0c\u9886\u517b\u8005\u548c\u88ab\u6536\u517b\u5ba0\u7269\u5230\u6765\u6536\u517b\u6240\u7684\u60c5\u51b5\uff0c\u5e0c\u671b\u4f60\u8ba1\u7b97\u6240\u6709\u6536\u517b\u4e86\u5ba0\u7269\u7684\u9886\u517b\u8005\u7684\u4e0d\u6ee1\u610f\u7a0b\u5ea6\u7684\u603b\u548c\u3002\u8fd9\u4e00\u5e74\u521d\u59cb\u65f6\uff0c\u6536\u517b\u6240\u91cc\u9762\u65e2\u6ca1\u6709 \u5ba0\u7269\uff0c\u4e5f\u6ca1\u6709\u9886\u517b\u8005\u3002 Input \u7b2c\u4e00\u884c\u4e3a\u4e00\u4e2a\u6b63\u6574\u6570n\uff0cn<=80000\uff0c\u8868\u793a\u4e00\u5e74\u5f53\u4e2d\u6765\u5230\u6536\u517b\u6240\u7684\u5ba0\u7269\u548c\u9886\u517b\u8005\u7684\u603b\u6570\u3002\u63a5\u4e0b\u6765\u7684n\u884c\uff0c\u6309\u5230\u6765\u65f6\u95f4\u7684\u5148\u540e\u987a\u5e8f\u63cf\u8ff0\u4e86\u4e00\u5e74\u5f53\u4e2d\u6765\u5230\u6536 \u517b\u6240\u7684\u5ba0\u7269\u548c\u9886\u517b\u8005\u7684\u60c5\u51b5\u3002\u6bcf\u884c\u6709\u4e24\u4e2a\u6b63\u6574\u6570a, b\uff0c\u5176\u4e2da=0\u8868\u793a\u5ba0\u7269\uff0ca=1\u8868\u793a\u9886\u517b\u8005\uff0cb\u8868\u793a\u5ba0\u7269\u7684\u7279\u70b9\u503c\u6216\u662f\u9886\u517b\u8005\u5e0c\u671b\u9886\u517b\u5ba0\u7269\u7684\u7279\u70b9\u503c\u3002\uff08\u540c\u4e00\u65f6\u95f4\u5446\u5728\u6536\u517b\u6240\u4e2d\u7684\uff0c\u8981\u4e48\u5168\u662f\u5ba0\u7269\uff0c\u8981\u4e48\u5168\u662f\u9886\u517b \u8005\uff0c\u8fd9\u4e9b\u5ba0\u7269\u548c\u9886\u517b\u8005\u7684\u4e2a\u6570\u4e0d\u4f1a\u8d85\u8fc710000\u4e2a\uff09 Output \u4ec5\u6709\u4e00\u4e2a\u6b63\u6574\u6570\uff0c\u8868\u793a\u4e00\u5e74\u5f53\u4e2d\u6240\u6709\u6536\u517b\u4e86\u5ba0\u7269\u7684\u9886\u517b\u8005\u7684\u4e0d\u6ee1\u610f\u7a0b\u5ea6\u7684\u603b\u548cmod 1000000\u4ee5\u540e\u7684\u7ed3\u679c\u3002 Sample Input 50 20 41 31 21 5 Sample Output 3(abs(3-2) + abs(2-4)=3\uff0c\u6700\u540e\u4e00\u4e2a\u9886\u517b\u8005\u6ca1\u6709\u5ba0\u7269\u53ef\u4ee5\u9886\u517b) Source \u5728set\u5b58\u5728\u7684\u60c5\u51b5\u4e0b\u8fd9\u662f\u4e00\u4e2a\u5927\u6c34\u9898\u4e3a\u4e86\u65b9\u4fbf\u63d2\u5165\u4e24\u4e2a\u65e0\u7a77\u8282\u70b9..\u957f\u5ea6\u6700\u77ed(*^__^*) Code:#include<cstdio>#include<set>using namespace std;const int inf=~0U>>2;typedef 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