Cod sursa(job #1725245)

Utilizator valentin50517Vozian Valentin valentin50517 Data 5 iulie 2016 11:53:47
Problema Factorial Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.26 kb
Raporteaza aceasta sursa 
#include <bits/stdc++.h>
using namespace std;
int P,N,a,b;
int main(){
	ifstream cin("fact.in");
	ofstream cout("fact.out");
	cin >> P;
	if(!P) return cout << 1,0;
	int rs = P*5,aux = P,k=0;
	while(aux){
		rs-=5*k;
		k++;
		aux/=5;
	}
	cout << rs;
    return 0;
}