郑州轻工业大学OJ：java1036

import java.util.Scanner;

public class Main {
public static void main(String[] args) {
int a;
int b;
Scanner in=new Scanner(System.in);
in.useDelimiter(" ");
a=in.nextInt();
b=in.nextInt();
if(a%40) {
if(a%1000&a%400!=0) {
if(b2) {
System.out.println(“28”);
}
if(b1||b3||b5||b7||b8||b10||b12) {
System.out.println(“31”);
}
if(b4||b6||b9||b11) {
System.out.println(“30”);
}
}else {
if(b2) {
System.out.println(“29”);
}
if(b1||b3||b5||b7||b8||b10||b12) {
System.out.println(“31”);
}
if(b4||b6||b9||b11) {
System.out.println(“30”);
}
}
}else {
if(b2) {
System.out.println(“28”);
}
if(b1||b3||b5||b7||b8||b10||b12) {
System.out.println(“31”);
}
if(b4||b6||b9||b11) {
System.out.println(“30”);
}
}
}
}