View Code of Problem 119

#include<iostream>
#include<cmath>

using namespace std;

int isprime(int n){
    if(n==2||n==3) return 1;
    if(n%6!=1&&n%6!=5) return 0;
    for (int  i = 5; i < sqrt(n); i+=6)
    {
       if(n%i==0||n%(i+2)==0) return 0;
    }
    return 1;
}

int main(){
    int n,k=1;
    while(cin>>n){
       int flag;
       flag=isprime(n);
       if(flag) printf("Case #%d: I'm richer than any one\n",k++);
       else printf("Case #%d: What a fxcking day\n",k++);  
    }
    return 0;
}