stop snt

#include<iostream>
using namespace std;
bool kq(int day, int month)
{
	bool kqr = false;
	if (day==31 && (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12 )) kqr= true;
	if (day == 28 && month == 2 )  kqr = true;
	if (day = 31 && (month == 4 || month == 6 || month == 9 || month == 11) ) kqr = true;
	return kqr;
}
int main()
{
	int day, month;
	cout << "nhap thang ngay, thang" << endl;
	cin >>day >> month;
	if kq( day month) == true {cout << "Ban nhap dung roi" };
	else cout << "ban nhap khong dung" << endl;
}