http://codeforces.com/gym/100650 阅读题,边界的cell的邻居要当成一个环形的来算,时间有8s,状态最多2^16种,所以直接暴力枚举就行了.另外一种做法是逆推. #include<bits/stdc++.h> using namespace std; int m,n; ; int g[maxn][maxn]; int cnt[maxn][maxn]; ,,-,-, ,,, }; ,,-, ,-,,,-}; typedef pair<int,int>…
A. time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Rock... Paper! After Karen have found the deterministic winning (losing?) strategy for rock-paper-scissors, her brother, Koyomi, comes up…
A. Bear and Big Brother time limit per test:1 second memory limit per test:256 megabytes input:standard input output:standard output Bear Limak wants to become the largest of bears, or at least to become larger than his brother Bob. Right now, Limak…
[题目链接]:click here~~ [题目大意] 一组题目的数目(n<=15),每一个题目有对应的难度,问你选择一定的题目(大于r个且小于l个)且选择后的题目里最小难度与最大难度差不小于x,求选择方案数. [解题思路]: DFS+回溯. 先发一发比較拙的代码: #include <bits/stdc++.h> using namespace std; const int N=1e5+10; int num[N],mum[N]; int n,m,q,t,l,r; int top,ans…
B. Covered Path Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/534/problem/B Description The on-board computer on Polycarp's car measured that the car speed at the beginning of some section of the path equals v1 meters per…