Cod sursa(job #850878)

Utilizator freakingVlad Eu freaking Data 9 ianuarie 2013 01:22:24
Problema Factorial Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.32 kb
Raporteaza aceasta sursa 
#include <fstream>
#include <iostream>

using namespace std;

int main(){
	ifstream in("fact.in");
	ofstream out("fact.out");
	int n;
	in>>n;
	int a,b,c;
	if(n==1){
		out<<'0'<<'\n';
	}
	else{
		a=n/6;
		b=n%6;
		if(b==5)
			out<<"-1"<<'\n';
		else{
			out<<(n*5)-(5*a)<<"\n";
		}
	}
	return 0;	
}