题解 | 牛牛的计划

逐两位比较

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        if (in.hasNextLine()) { // 注意 while 处理多个 case
            int y = in.nextInt();
            int m = in.nextInt();
            int d = in.nextInt();
            int y1 = in.nextInt();
            int m1 = in.nextInt();
            int d1 = in.nextInt();
            boolean started = false;
            int[] dates = {y, y1, m, m1, d, d1};
            for (int i = 0; i < dates.length; i = i + 2) {
                if (i == dates.length - 2) if (dates[i] == dates[i + 1]) started = true;
                if (dates[i] < dates[i + 1]) { started = true; break; }
                if (dates[i] > dates[i + 1]) break;
            }
            if (started) System.out.println("yes");
            else System.out.println("no");
        }
    }
}