Cod sursa(job #11689)

Utilizator BlackElfSpulber Iosif BlackElf Data 1 februarie 2007 11:45:16
Problema Factorial Scor 25
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.36 kb
Raporteaza aceasta sursa 
#include <iostream.h>
#include <fstream.h>

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

int howmanyfives (long a)
{
int i=0;
while (a%5==0)
{
i++;
a/=5;
}

return i;
}

int main ()
{
long N=0,P;
register long i,zeros=0;
in>>P;

while (zeros<P)
{
 N+=5;
 zeros+=howmanyfives(N);
}

if (zeros == 0)
 out<<1;
out<<N;

return 0;
}