Cod sursa(job #632250)

Utilizator VimanAdrianVimanAdrian VimanAdrian Data 10 noiembrie 2011 18:15:52
Problema Factorial Scor 30
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.34 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;
ifstream in("fact.in");
ofstream out("fact.out");
int main()
{
int p,ok=0,n,fives=0,pp;
in>>p;

for(n=1;ok==0 && n>0;n++)
{
pp=n;
while(pp%5==0){
if (pp%5==0) { fives++; pp=pp/5;}
}

if(fives>=p)
ok=n;
}

if(fives != p) out<<-1;
else out<<ok;

out.close();
in.close();

return 0;
}