lightOJ 1220 Mysterious Bacteria

题目分析

#include <cmath>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <algorithm>
using namespace std;
#define LL long long

int main(){
int T;
scanf("%d", &T);
for(int kase = 1; kase <= T; kase++){
LL n;
int cnt = 0;
scanf("%lld", &n);
if(n < 0) n *= -1, cnt = 1;

int flag = 0;
for(int i = 2; i <= sqrt(0.5+n); i++)if(n%i == 0){
LL temp = n, tot = 0;
while(temp%i == 0){
tot++;
temp /= i;
}
if(temp == 1){
if(cnt && tot%2 == 0) continue;
flag = 1;
printf("Case %d: %lld\n", kase, tot);
break;
}
}
if(!flag) printf("Case %d: 1\n", kase);
}
return 0;
}