题解 | #牛牛的计划#

import java.time.LocalDate;
import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        int y1=sc.nextInt();
        int m1=sc.nextInt();
        int d1=sc.nextInt();

        int y2=sc.nextInt();
        int m2=sc.nextInt();
        int d2=sc.nextInt();

        LocalDate date1=LocalDate.of(y1,m1,d1);
        LocalDate date2=LocalDate.of(y2,m2,d2);

        if(date1.equals(date2)){
            System.out.println("yes");
        }else if(date1.isBefore(date2)){
            System.out.println("yes");
        }else{
            System.out.println("no");
        }
    }
}