Cod sursa(job #19896)

Utilizator mihai0110Bivol Mihai mihai0110 Data 20 februarie 2007 10:44:42
Problema Factorial Scor 60
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.36 kb
Raporteaza aceasta sursa 
#include<fstream.h>
ifstream f("fact.in");
ofstream g("fact.out");
int p,nr2,nr5,min,n,x;
int main()
{
f>>p;
n=0;
nr2=0;
nr5=0;
while(nr5<p)
{
n=n+5;
x=n;
//while(x%2==0)
//{
//nr2++;
//x=x/2;
//}
while(x%5==0)
{
nr5++;
x=x/5;
}
}
if(p==0)
g<<"1";
else
if(nr5==p)
g<<n;
else
g<<"-1";
g<<'\n';
f.close();
g.close();
return 0;
}