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HDU2509 Be The Winner

时间:2019-01-28 20:14:06      阅读:167      评论:0      收藏:0      [点我收藏+]

标签:can   tput   mat   app   group   single   VID   otherwise   spl   

Let‘s consider m apples divided into n groups. Each group contains no more than 100 apples, arranged in a line. You can take any number of consecutive apples at one time. 
For example "@@@" can be turned into "@@" or "@" or "@ @"(two piles). two people get apples one after another and the one who takes the last is 
the loser. Fra wants to know in which situations he can win by playing strategies (that is, no matter what action the rival takes, fra will win). 

InputYou will be given several cases. Each test case begins with a single number n (1 <= n <= 100), followed by a line with n numbers, the number of apples in each pile. There is a blank line between cases. 
OutputIf a winning strategies can be found, print a single line with "Yes", otherwise print "No". 
Sample Input

2
2 2
1
3

Sample Output

No
Yes
题解:考虑全为一的情况
参考代码:
技术分享图片
 1 #include<bits/stdc++.h>
 2 using namespace std;
 3 int n,ans,val,cnt;
 4 int main() 
 5 {
 6     while(~scanf("%d",&n))
 7     {
 8         ans=cnt=0;
 9         for(int i=1;i<=n;++i){ scanf("%d",&val),ans^=val;if(val>1) cnt++; }
10         if((!ans&&cnt>1)||(ans&&!cnt)) puts("No");
11         else puts("Yes");
12     } 
13     
14     return 0;
15 }
View Code

 

HDU2509 Be The Winner

标签:can   tput   mat   app   group   single   VID   otherwise   spl   

原文地址:https://www.cnblogs.com/songorz/p/10331490.html

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