Cod sursa(job #1519364)

Utilizator emiiMihailescu Ionut Emanuel emii Data 7 noiembrie 2015 11:38:10
Problema Factorial Scor 45
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.3 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;
ifstream f("fact.in");
ofstream g("fact.out");
int main()
{int p,n=5,nr=0;
f>>p;
if(p==0)
    g<<"1";
while(nr<p){
    int k=n;
    while(k%5==0)
        ++nr,k/=5;
    n+=5;
}
if(nr==p)
    g<<n-5;
else
    if(nr>p)
        g<<"-1";
return 0;
}