Cod sursa(job #506041)

Utilizator cameliamartMart Camelia cameliamart Data 4 decembrie 2010 21:26:56
Problema Factorial Scor 5
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.33 kb
Raporteaza aceasta sursa 
#include<fstream.h>
int main()
{
	ifstream f("fact.in");
	ofstream g("fact.out");
	int P,N,j,k,x,ok=0;
	f>>P;
	for(N=1;N++;)
	{
		k=0;x=1;
		for(j=1;j<=N;j++)x=x*j;
		while(x%10==0&&x)
		{
			k++;x/=10;
		}
		if(k==P)
		{
			g<<N;ok=1;
			break;
		}
	}
	if(ok==0)g<<"-1";
	f.close();
	g.close();
	return 0;
}