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uva 11549 - Calculator Conundrum 模拟
Floyd判圈算法，好厉害的样子
用sscanf要2s，速度太低，不过比较好写，要注意是字符数组要开19以上
/*
author:jxy
lang:C/C++
university:China,Xidian University
**If you need to reprint,please indicate the source**
*/
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
using namespace std;
int ans=0;
char s[21];
int n;
void next(int &k)
{
long long t=(long long)k*k;
sprintf(s,"%lld",t);
if(strlen(s)>n)s[n]='\0';
sscanf(s,"%d",&k);
ans=max(ans,k);
return;
}
int main()
{
int T;
scanf("%d",&T);
while(T--)
{
int k;
scanf("%d%d",&n,&k);
ans=k;
int k1=k;
do
{
next(k);
next(k);
next(k1);
}while(k1!=k);
printf("%d\n",ans);
}
}
最后更新：2017-04-03 15:22:03