C. Do you want a date? time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Leha decided to move to a quiet town Vičkopolis, because he was tired by living in Bankopolis. Upon arrival he immedi…

C. Do you want a date? time limit per test:2 seconds memory limit per test:256 megabytes input:standard input output:standard output Leha decided to move to a quiet town Vičkopolis, because he was tired by living in Bankopolis. Upon arrival he immedi…

You are given an integer sequence 1,2,…,n1,2,…,n. You have to divide it into two sets AAand BB in such a way that each element belongs to exactly one set and |sum(A)−sum(B)||sum(A)−sum(B)| is minimum possible. The value |x||x| is the absolute value o…

[题目链接]:http://codeforces.com/contest/810/problem/C [题意] 给你一个集合,它包含a[1],a[2]..a[n]这n个整数 让你求出这个集合的所有子集a的f(a)和 这里的f(a)=集合a中最大和最小元素的差; [题解] 朴素的想法是; 将数组a升序排; 枚举最后的集合中最大和最小的元素是a[i]和a[j](i< j); 则f值是a[j]-a[i]的集合有2^(j-i-1)个; 即a[i+1]..a[j-1]这些元素选和不选-. 然后答案+=2(…

CodeForces 22A 找严格第二小的...注意只有一种情况,可以sort排序然后unique输出. int a[N]; int main() { int n; while(~scanf("%d",&n)) { for(int i=0;i<n;i++) scanf("%d",&a[i]); sort(a,a+n); if(n==1||a[0]==a[n-1]) printf("NO\n"); else { unique…

题目链接: http://codeforces.com/problemset/problem/353/D?mobile=true H. Queue time limit per test 1 secondmemory limit per test 256 megabytes 问题描述 There are n schoolchildren, boys and girls, lined up in the school canteen in front of the bun stall. The b…

Another Rock-Paper-Scissors Problem 题目连接: http://codeforces.com/gym/100015/attachments Description Sonny uses a very peculiar pattern when it comes to playing rock-paper-scissors. He likes to vary his moves so that his opponent can't beat him with hi…

题目链接: http://codeforces.com/contest/664/problem/C 题解: 这题最关键的规律在于一位的有1989-1998(9-8),两位的有1999-2098(99-98),三位的有2099-3098(099-098),四位的有3099-13098(3099-3098) 所以关键字长度一样的会连续出现,1989+0代表一位的开始,1989+10代表两位的开始,1989+10+100代表三位的开始, 现在给你一个长度为len的标志,就可以找出该数位的起始位置198…

C. Median Smoothing Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/591/problem/C Description A schoolboy named Vasya loves reading books on programming and mathematics. He has recently read an encyclopedia article that des…

A. Hanoi tower Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100114 Description you the conditions of this task. There are 3 pivots: A, B, C. Initially, n disks of different diameter are placed on the pivot A: the smallest dis…