10323 Factorial You Must be Kidding-hVBHk53d.txt

#include<cstdio>
#include<iostream>
using namespace std;
long long int ara[15];
int factorial()
{
    ara[0]=1;
    long long int sum=1;
    for(long int i=1; i<=15; i++){
        sum*=i;
        ara[i]=sum;
    }
}
int main()
{
    factorial();
    int n;
    while(cin>>n){
        int flag = 0;
        if(n<0){
            int x=n*(-1);
            if(x%2==1)
                cout<<"Overflow!"<<endl;
            else
                cout<<"Underflow!"<<endl;
        }
        else{
            if(n<8)
                cout<<"Underflow!"<<endl;
            else if(n>13)
                cout<<"Overflow!"<<endl;
            else
                cout<<ara[n]<<endl;
        }
    }
    return 0;
}