Cod sursa(job #1579242)

Utilizator DarjusFiran Darius Darjus Data 24 ianuarie 2016 15:59:43
Problema Factorial Scor 15
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.46 kb
#include <fstream>
using namespace std;
int main()
{
    ifstream fin("fact.in");
    ofstream fout("fact.out");
    int s=0,q=0,o,i;
    fin>>o;
    if(o!=0)
    {
        for(i=5;s<=o;i=i+5)
        {
            q=i;
            while(q%5==0)
            {
                s=s+1;
                q=q/5;
            }
        }
        if(s!=o)
            fout<<-1;
        else
            fout<<i;
    }
    else fout<<1;
    return 0;
}