Cod sursa(job #397741)

Utilizator mihai995mihai995 mihai995 Data 17 februarie 2010 13:33:22
Problema Factorial Scor 90
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.35 kb
Raporteaza aceasta sursa 
#include<fstream>
using namespace std;
int zero(int n)
{
	int rez=0;
	while (n)
	{
		rez+=n/5;
		n/=5;
	}
	return rez;
}

int caut(int p)
{
	int i,pas=1<<30;
	for (i=0;pas;pas>>=1)
		if (zero(i+pas)<p) i+=pas;
	return i+1;
}

int main()
{
	int p;
	ifstream f("fact.in");
	ofstream o("fact.out");
	f>>p;
	o<<caut(p);
	return 0;
}