#include<iostream>
using namespace std;
bool KiemTraNamNhuan(int Nam){
	if (Nam % 400 == 0 || (Nam % 4 == 0 && Nam % 100 != 0)){
		return true;
	}
	return false;
}
void main(){
	int NamKT;
	cout << "\nNhap nam can kiem tra: "; cin >> NamKT;

	if (KiemTraNamNhuan(NamKT) == true)
		cout << "Nam " << NamKT << " La nam nhuan!";
	else
		cout << "Nam " << NamKT << " Ko phai la nam nhuan!";

	cout << endl;
	system("pause");
}