#include using namespace std;

int main() { int a, b,c=0; cin >> a >> b;

if (b == 1 || b == 3 || b == 5 || b == 7 || b == 8||b==10||b==12) {
	c = 31;
}
else if (b == 2 && a % 4 == 0 && a%100!=0) {
	c = 29;
}
else if (b == 2 && a % 400 == 0) {
	c = 29;
}
else if (b == 2 && a % 400 != 0 && a % 4 != 0) {
	c = 28;	
}
else {
	c = 30;
}

cout << c << endl;
return 0;

}```cpp