UVA 568

#include<iostream>
using namespace std;
int main()
{
    int n;
    while(cin>>n)
    {
        if(n==0)
            cout<<"   "<<0<<" -> "<<1<<endl;
        else
        {
        int i,temp=1;
        for(i=1;i<=n;i++)
        {
            temp=temp*i;
            while(temp%10==0)
                temp=temp/10;
            while(temp>100000)
                temp=temp-temp/100000*100000;
        }
        int temp2=n;
        while(n<10000)
        {
            cout<<" ";
            n=n*10;
        }
        cout<<temp2<<" -> "<<temp%10<<endl;
        }
    }
    return 0;
}