每日一解——每月天数

#include<iostream>
using namespace std;
int main(){
int nian,yue;
cin>>nian>>yue;
if(yue1||yue3||yue5||yue7||yue8||yue10||yue12){
cout<<31;
}
else if(yue4||yue6||yue9||yue11){
cout<<30;
}
else{
if(nian%400!=0 && nian%1000|| nian%4!=0){
cout<<28;
}else{
cout<<29;
}
}
}