摘要：Fire Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 1616 Accepted: 878 Description Country Z has N cities, which are numbered from 1 to N. 阅读全文

摘要：Walking Race Time Limit: 10000MS Memory Limit: 131072K Total Submissions: 4123 Accepted: 1029 Case Time Limit: 3000MS Description flymouse’s sister wc 阅读全文

摘要：Information Disturbing Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 131072/65536 K (Java/Others)Total Submission(s): 3205 Accepted Submission( 阅读全文

摘要：Contestants Division Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 10704 Accepted: 3004 Description In the new ACM-ICPC Regional Contest, 阅读全文

摘要：Tree Cutting Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 4834 Accepted: 2958 Description After Farmer John realized that Bessie had ins 阅读全文

摘要：Computer Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 31049 Accepted Submission(s): 3929 Probl 阅读全文

摘要：Anniversary party Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 12770 Accepted Submission(s): 5 阅读全文

摘要：Tree Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 24258 Accepted: 8062 Description Give a tree with n vertices,each edge has a length(po 阅读全文

摘要：Godfather Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 7536 Accepted: 2659 Description Last years Chicago was full of gangster fights an 阅读全文

摘要：Balancing Act Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 14550 Accepted: 6173 Description Consider a tree T with N (1 <= N <= 20,000) 阅读全文

摘要：n的m划分 将n划分成若干个不超过m的数（正整数）的和，问有几种划分情况。 现在根据n和m的关系，考虑下面几种情况： 综上的递推表达式为： 将n划分成不超过m个数（正整数）的和，问有几种情况。 dp[i][j]表示j的i划分。 考虑n的m划分，如果对于每一个i都有xi>0，那么{xi-1}就对应了n 阅读全文

摘要：题目链接：https://vjudge.net/problem/UVA-11324 题意：求一个有向图中结点数最大的结点集，使得该结点集中任意两个结点u和v满足：要目u可以到达v，要么v可以到达u（相互可达也可以）。 思路：同一个强联通分量的结点集中任意两个结点u和v满足题的要求足：要么u可以到达v 阅读全文

摘要：C. Coloring Trees time limit per test:2 seconds memory limit per test:256 megabytes input:standard input output:standard output ZS the Coder and Chris 阅读全文

摘要：A. Chain Reaction time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A. Chain Reaction time 阅读全文

摘要：C. New Year and Domino time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output They say "years a 阅读全文