uva 839 (Not so mobile)天平 ---遞迴輸入_uva

java的寫法

import java.util.Scanner;public class Main {static Scanner scan = new Scanner(System.in);public static void main(String[] args) {int T = scan.nextInt();while(T--!=0){if(solve(new M(0))){System.out.println("YES");}else{System.out.println("NO");}if(T!=0)System.out.println();}}private static boolean solve(M w) {M wl = new M(scan.nextInt());M dl = new M(scan.nextInt());M wr = new M(scan.nextInt());M dr = new M(scan.nextInt());boolean b1 = true,b2 = true;if(wl.value==0)b1 = solve(wl);if(wr.value==0)b2 = solve(wr);w.value = wl.value+wr.value;return b1&&b2&&wl.value*dl.value==wr.value*dr.value;}static class M{public int value;public M(int value){this.value = value;}}}