/*
从控制台输入年份月份，打印该月有多少天？（区分平年与闰年的2月）
*/
import java.util.Scanner;
public class TianShu {
public static void main(String[] args) {
// TODO Auto-generated method stub
int year;
int month;
Scanner sc=new Scanner(System.in);
System.out.println("请输入年份：");
year=sc.nextInt();
System.out.println("请输入月份：");
month=sc.nextInt();
if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)
{
System.out.println(year+"年"+month+"月有31天");
}
if(month==4||month==6||month==9||month==11)
{
System.out.println(year+"年"+month+"月有30天");
}
if(month==2)
{
if((year%400==0)||(year%4==0&&year%100!=0))
{
System.out.println(year+"年"+month+"月有29天");
}
else
System.out.println(year+"年"+month+"月有28天");
}
}
}