Cod sursa(job #825558)

Utilizator RaresGabrielMircea Rares-Gabriel RaresGabriel Data 29 noiembrie 2012 10:54:07
Problema Factorial Scor 5
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.34 kb
Raporteaza aceasta sursa 
#include<iostream>
#include<cmath>
#include<fstream>

using namespace std;

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

int main () {
    int n,i,p=1,c;
      fin >> n;
      for (i =1;i<=n;i++){
	           p=p*i;}

     if(p%10==0)fout<<p;
         else fout<<"-1";


	fin.close();
	fout.close();

	return 0;

}