Cod sursa(job #2341108)

Utilizator DeniszPop Denis Denisz Data 11 februarie 2019 15:51:36
Problema Factorial Scor 0
Compilator cpp-64 Status done
Runda sem2_1 Marime 0.33 kb
Raporteaza aceasta sursa 
#include <fstream>
#include <iostream>

using namespace std;

ifstream fin("fact.in");
ofstream fout("fact.out");

int main()
{
    int p,m,s=0,n;
    cin>>p;
    for(n=4*p; s<p; n++)
        for(m=n,s=0; m; m/=5,s+=m);
    if(s-p)
        cout<<-1;
    else if(p)
        cout<<n-1;
    else cout<<1;
    return 0;
}