取(m堆)石子游戏
Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 2713 Accepted Submission(s): 1617
Problem Description
m堆石子,两人轮流取.只能在1堆中取.取完者胜.先取者负输出No.先取者胜输出Yes,然后输出怎样取子.例如5堆 5,7,8,9,10先取者胜,先取者第1次取时可以从有8个的那一堆取走7个剩下1个,也可以从有9个的中那一堆取走9个剩下0个,也可以从有10个的中那一堆取走7个剩下3个.
Input
输入有多组.每组第1行是m,m<=200000. 后面m个非零正整数.m=0退出.
Output
先取者负输出No.先取者胜输出Yes,然后输出先取者第1次取子的所有方法.如果从有a个石子的堆中取若干个后剩下b个后会胜就输出a b.参看Sample Output.
Sample Input
2 45 45 3 3 6 9 5 5 7 8 9 10 0
Sample Output
No Yes 9 5 Yes 8 1 9 0 10 3
Author
Zhousc
Source
题意:中文题.....不说了....
分析:这不和hdu1850差不多嘛;稍微改一下不就行了
#include <iostream> #include <cstdio> #include <cstring> #include <stack> #include <queue> #include <map> #include <set> #include <vector> #include <cmath> #include <algorithm> using namespace std; const double eps = 1e-6; const double pi = acos(-1.0); const int INF = 1e9; const int MOD = 1e9+7; #define ll long long #define CL(a,b) memset(a,b,sizeof(a)) #define lson (i<<1) #define rson ((i<<1)|1) #define N 50010 int gcd(int a,int b) { return b?gcd(b,a%b):a; } int n,a[200000+10]; int main() { while(scanf("%d",&n),n) { int sum=0,ans=0; for(int i=0; i<n; i++) { scanf("%d",&a[i]); sum ^= a[i]; } if(sum==0) cout<<"No"<<endl; else { cout<<"Yes"<<endl; for(int i=0; i<n; i++) { if((sum^a[i]) <= a[i]) cout<<a[i]<<" "<<(sum^a[i])<<endl; } } } return 0; }
时间: 2024-10-29 04:55:23