取石子游戏
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 2146 Accepted Submission(s): 1237
Problem Description
1堆石子有n个,两人轮流取.先取者第1次可以取任意多个，但不能全部取完.以后每次取的石子数不能超过上次取子数的2倍。取完者胜.先取者负输出"Second win".先取者胜输出"First win".
Input
输入有多组.每组第1行是2<=n<2^31. n=0退出.
Output
先取者负输出"Second win". 先取者胜输出"First win".
参看Sample Output.
参看Sample Output.
Sample Input
2 13 10000 0
Sample Output
Second win Second win First win找规律的题!
#include <iostream>
#include <stdio.h>
#include <string.h>
using namespace std;
int main()
{
int a,b,n;
while(scanf("%d",&n)!=EOF&&n){
a=1;b=1;
while(b<n){
a=a+b;
swap(a,b);
}
if(b==n){
printf("Second win\n");
}
else printf("First win\n");
}
return 0;
}