AAA男士内裤批发 • 6小时前
include<bits/stdc++.h> using namespace std; int main(){
int A,B; cin>>A>>B; if(A%4==0&&(A%100!=0||A%400==0)) {
if(B==1||B==3||B==5||B==7||B==8||B==10||B==12) {
cout<<"31";
} else if(B==4||B==6||B==9||B==11) {
cout<<"30";
} else {
cout<<"29";
} } else {
if(B==1||B==3||B==5||B==7||B==8||B==10||B==12) {
cout<<"31";
} else if(B==4||B==6||B==9||B==11) {
cout<<"30";
} else {
cout<<"28";
} } return 0; }
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