Cod sursa(job #482945)
Utilizator | Data | 6 septembrie 2010 11:58:50 | |
---|---|---|---|
Problema | Factorial | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.35 kb |
#include<fstream.h>
void main()
{
long p,i,nr,n5,x,fr;
n5=0;
ifstream f("fact.in");
ofstream g("fact.out");
f>>p;
if(p==0)
g<<1;
else
{
for(i=1;;i++)
{
if(i%5==0)
{
x=i;
fr=0;
while(x%5==0)
{
x=x/5;
fr++;
}
n5=n5+fr;
}
n5++;
if(n5>=p)break;
}
if(n5==p)
g<<5*i;
if(n5>p)
g<<-1;
}
}