E. Ann and Half-Palindrome time limit per test 1.5 seconds memory limit per test 512 megabytes input standard input output standard output Tomorrow Ann takes the hardest exam of programming where she should get an excellent mark. On the last theoreti…
E. Ann and Half-Palindrome Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/557/problem/E Description Tomorrow Ann takes the hardest exam of programming where she should get an excellent mark. On the last theoretical class t…
题意:做蛋糕,给出N个半径,和高的圆柱,要求后面的体积比前面大的可以堆在前一个的上面,求最大的体积和. 思路:首先离散化蛋糕体积,以蛋糕数量建树建树,每个节点维护最大值,也就是假如节点i放在最上层情况下的体积最大值dp[i].每次查询比蛋糕i小且最大体积的蛋糕,然后更新线段树.注意此题查询的技巧!!查询区间不变l,r,才能保证每次查到的是小且最大体积. #include<iostream> #include<string> #include<algorithm> #in…
B. Longtail Hedgehog   This Christmas Santa gave Masha a magic picture and a pencil. The picture consists of n points connected by m segments (they might cross in any way, that doesn't matter). No two segments connect the same pair of points, and no…
A. Ilya and Diplomas 思路:水题了, 随随便便枚举一下,分情况讨论一下就OK了. code: #include <stdio.h> #include <stdlib.h> #include <string.h> #include <algorithm> #include <iostream> #include <cstring> #include <cmath> #define inf 1000000…
D. Vitaly and Cycle Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/557/problem/D Description After Vitaly was expelled from the university, he became interested in the graph theory. Vitaly especially liked the cycles of an…
C. Arthur and Table Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/557/problem/C Description Arthur has bought a beautiful big table into his new flat. When he came home, Arthur noticed that the new table is unstable. In t…
B. Pasha and Tea Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/557/problem/B Description Pasha decided to invite his friends to a tea party. For that occasion, he has a large teapot with the capacity of w milliliters and…
A. Ilya and Diplomas Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/557/problem/A Description Soon a school Olympiad in Informatics will be held in Berland, n schoolchildren will participate there. At a meeting of the jury…
A. Ilya and Diplomas time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Soon a school Olympiad in Informatics will be held in Berland, n schoolchildren will participate there. At a meeting of…