Cod sursa(job #808293)

Utilizator AleAnd95Musat Andreea Alexandra AleAnd95 Data 6 noiembrie 2012 16:42:27
Problema Factorial Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.34 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream.h>
using namespace std;
ifstream in("fact.in");
ofstream out("fact.out");
int main () {
	int p,n,k;
	cin>>p;
	if (p>=1 && p<5) {n=5*p; cout<<n;return 0;}
	if(p==0) {cout<<"1"; return 0;}
	k=(p-5)/6; 
	if (k==0) {cout<<"-1"; return 0;}
	if(k>=0)
		{n=(p-k-1)*5;
		cout<<n;}
	return 0;
	
}