C. Soldier and Cards Time Limit: 20 Sec  Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/546/problem/C Description Two bored soldiers are playing card war. Their card deck consists of exactly n cards, numbered from 1 to n, all values are diff…

题目链接:http://codeforces.com/problemset/problem/546/C 题解: 用两个队列模拟过程就可以了. 特殊的地方是:1.如果等大,那么两张牌都丢弃 : 2.如果操作了很多次仍不能分出胜负,则认为平手.(至于多少次,我也不知道,只能写大一点碰运气,但要防止超时) 代码如下: #include<iostream>//C - Soldier and Cards #include<cstdio> #include<cstring> #in…

B. Soldier and Badges Time Limit: 20 Sec  Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/546/problem/B Description Colonel has n badges. He wants to give one badge to every of his n soldiers. Each badge has a coolness factor, which shows how…

题目传送门 /* 题意:两堆牌,每次拿出上面的牌做比较,大的一方收走两张牌,直到一方没有牌 queue容器:模拟上述过程,当次数达到最大值时判断为-1 */ #include <cstdio> #include <iostream> #include <algorithm> #include <cstring> #include <string> #include <stack> #include <cmath> #inc…

题目传送门 /* 题意:b+1,b+2,...,a 所有数的素数个数和 DP+埃氏筛法:dp[i] 记录i的素数个数和,若i是素数,则为1:否则它可以从一个数乘以素数递推过来 最后改为i之前所有素数个数和,那么ans = dp[a] - dp[b]: 详细解释:http://blog.csdn.net/catglory/article/details/45932593 */ #include <cstdio> #include <algorithm> #include <cs…

题目传送门 /* 题意:问最少增加多少值使变成递增序列 贪心:排序后,每一个值改为前一个值+1,有可能a[i-1] = a[i] + 1,所以要 >= */ #include <cstdio> #include <cstring> #include <algorithm> using namespace std; typedef long long ll; ; const int INF = 0x3f3f3f3f; int a[MAXN]; int main(vo…

题目传送门 /* 水题:ans = (1+2+3+...+n) * k - n,开long long */ #include <cstdio> #include <algorithm> #include <cstring> #include <cmath> using namespace std; typedef long long ll; int main(void) //Codeforces Round #304 (Div. 2) A. Soldier…

题目传送门 /* 题意:这题就是求b+1到a的因子个数和. 数学+DP:a[i]保存i的最小因子,dp[i] = dp[i/a[i]] +1;再来一个前缀和 */ /************************************************ Author :Running_Time Created Time :2015-8-1 14:08:34 File Name :B.cpp ************************************************…

Codeforces Round #297 (Div. 2)A. Vitaliy and Pie Time Limit: 2 Sec  Memory Limit: 256 MBSubmit: xxx  Solved: 2xx 题目连接 http://codeforces.com/contest/525/problem/A Description After a hard day Vitaly got very hungry and he wants to eat his favorite pot…

A. Fox And Snake 题目连接: http://codeforces.com/contest/510/problem/A Description Fox Ciel starts to learn programming. The first task is drawing a fox! However, that turns out to be too hard for a beginner, so she decides to draw a snake instead. A sna…