Cod sursa(job #2087758)

Utilizator asdrian998Adrian Vlad asdrian998 Data 14 decembrie 2017 10:27:06
Problema Factorial Scor 10
Compilator cpp Status done
Runda bon Marime 0.31 kb
Raporteaza aceasta sursa 
#include <fstream>

using namespace std;
ifstream cin("fact.in");
ofstream cout("fact.out");


int main()
{
    unsigned long p;
    cin>>p;
    
    if(p==0) {
    	cout<<"1";
    	return 0;
	}
    if ((p+1)%6==0) {
		cout<<"-1";
		return 0;
	}
	
    cout<<(p-((p+1)/6))*5;
    return 0;
}