题目链接:http://poj.org/problem?id=1269 #include<cstdio> #include<cstring> #include<cmath> #include<iostream> #include<algorithm> #include<queue> using namespace std; ; ; const int INF = 0x3f3f3f; ; const double PI = acos(-…

求组合数,dfs即可 #include<cstdio> #include<iostream> #include<algorithm> #include<cstring> #include<cmath> #include<queue> using namespace std; int N,m,t; ],vis[]; void dfs(int st,int n) { int i; ) //已选择6个 { ; ;i<=N;i++) {…

The Hardest Problem Ever Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 24241   Accepted: 13227 Description Julius Caesar lived in a time of danger and intrigue. The hardest situation Caesar ever faced was keeping himself alive. In orde…

#include<stdio.h> #include<string.h> #define N 1100000 int isprim[N],prime[N]; void isprime() { int i,j; memset(isprim,-1,sizeof(isprim)); isprim[1]=0; for(i=2;i<=1000;i++) if(isprim[i]==-1) { for(j=i*2;j<=1000000;j+=i) isprim[j]=0; } }…

5分钟写完 水水更开心 //By SiriusRen #include <cstdio> #include <iostream> #include <algorithm> using namespace std; int m,t,u,f,d; char jy; int main(){ scanf("%d%d%d%d%d",&m,&t,&u,&f,&d); for(int i=1;i<=t;i++){ ci…

id=1269" rel="nofollow">Intersecting Lines 大意:给你两条直线的坐标,推断两条直线是否共线.平行.相交.若相交.求出交点. 思路:线段相交推断.求交点的水题.没什么好说的. struct Point{ double x, y; } ; struct Line{ Point a, b; } A, B; double xmult(Point p1, Point p2, Point p) { return (p1.x-p.x)*(p2…

以下是poj百道水题,新手可以考虑从这里刷起 搜索1002 Fire Net1004 Anagrams by Stack1005 Jugs1008 Gnome Tetravex1091 Knight Moves1101 Gamblers1204 Additive equations 1221 Risk1230 Legendary Pokemon1249 Pushing Boxes 1364 Machine Schedule1368 BOAT1406 Jungle Roads1411 Annive…

POJ 1488 题目大意:给定一篇文章,将它的左引号转成 ``(1的左边),右引号转成 ''(两个 ' ) 解题思路:水题,设置一个bool变量标记是左引号还是右引号即可 /* POJ 1488 Tex Quotes --- 水题 */ #include <cstdio> #include <cstring> int main() { #ifdef _LOCAL freopen("D:\\input.txt", "r", stdin); #…

POJ 3176 Cow Bowling 链接: http://poj.org/problem?id=3176 这道题可以算是dp入门吧.可以用一个二维数组从下向上来搜索从而得到最大值. 优化之后可以直接用一维数组来存.(PS 用一维的时候要好好想想具体应该怎么存,还是有技巧的) #include<iostream> #include<cstring> #include<cmath> #include<cstdio> using namespace std;…

题目:http://poj.org/problem?id=3080 水题,暴搜 #include <iostream> #include<cstdio> #include<cstring> #include<cstdlib> #include<stack> #include<queue> #include<iomanip> #include<cmath> #include<map> #include…