I can't understand why wrong answer in test 10
here is my code


#include <iostream>
using namespace std;
int main()
{
    long int i=2,j,k,n,s=1;
    char a[100];
    cin>>n;
    cin>>a;
    k=strlen(a);
    if(n%k)
    {
        j=n-k;
        s=n;
        while(j>=(n%k))
        {
            s*=j;
            j=n-(i++)*k;
        }
        s*=n%k;
    }
    if(n%k==0)
    {
        j=n-k;
        s=n;
        while(j)
        {
            s*=j;
            j=n-(i++)*k;
        }
    }
    if(n<=k) s=n;
    return 0;
}

use unsigned __int64:
My AC Code,Neat:)

#include<iostream>
#include<string>
using namespace std;
int main (void){
    int n,k;
    string s;
    cin>>n>>s;
    k=s.size();
    unsigned __int64 fac=1;
    while (n>0){
        fac*=n;
        n-=k;
    }
    cout<<fac<<endl;
    return 0;
}

Edited by author 13.07.2009 19:48

Edited by author 13.07.2009 19:48

Edited by author 13.07.2009 19:48

Edited by author 13.07.2009 19:48