Cod sursa(job #385441)
Utilizator | Data | 22 ianuarie 2010 18:39:28 | |
---|---|---|---|
Problema | Factorial | Scor | 25 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.34 kb |
#include<iostream.h>
#include<fstream.h>
ifstream f("fact.in");
ofstream g("fact.out");
long p,i,v5,c5;
char o;
int main()
{
f>>p;
v5=5;
while(c5<p) {
i++;
while(o==0)
if(i%v5==0) {c5++;v5=v5*5;}else o=1;
o=0;
v5=5;
}
if(c5==p&&p!=0) g<<i;
else if(p==0)g<<"1"; else g<<"-1";
f.close();
g.close();
}