Cod sursa(job #632250)
Utilizator | VimanAdrian VimanAdrian | Data | 10 noiembrie 2011 18:15:52 |
---|---|---|---|
Problema | Factorial | Scor | 30 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.34 kb |
#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;
}