Cod sursa(job #880414)
Utilizator | Data | 16 februarie 2013 18:41:01 | |
---|---|---|---|
Problema | Factorial | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.48 kb |
#include <iostream>
#include <fstream>
using namespace std;
fstream f("fact.in",ios::in);
fstream g("fact.out",ios::out);
int nrz (int n)
{
if (n)
return n/5+nrz(n/5);
return 0;
}
int ndinz (int p)
{
int i;
if (!p)
return 1;
for (i=((4*p+1)/5)*5;;i=i+5)
{
if (nrz(i)==p)
return i;
if (nrz(i)>p)
return -1;
}
}
int main()
{
int n,p,i;
f>>p;
g<<ndinz(p);
}