这有问题吗！！！

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,y,t[12]={31,28,31,30,31,30,31,31,30,31,30,31};
	cin>>n>>y;
	if(n%4==0 && n/100!=0 || n%400==0){
		t[1]=29;
	}
	cout<<t[y-1];
}