Untitled

package com.company;

import java.util.Scanner;

public class Main {
    static boolean not_found;

    static boolean check_expression(String expression, char math_symbol) {
        String operand1 = expression.substring(0, 2);
        String operand2 = expression.substring(5, 7);
        String ans = expression.substring(10);
        int op1 = Integer.parseInt(operand1);
        int op2 = Integer.parseInt(operand2);
        int kq = Integer.parseInt(ans);
        if (math_symbol == '+') {
            return (op1 + op2 == kq);
        }
        if (math_symbol == '-') {
            return (op1 - op2 == kq);
        }
        if (math_symbol == '/') {
            return (op1 / op2 == kq);
        }
        return (op1 * op2 == kq);
    }

    static void Try(String expression, char math_symbol, int k) {
        if (not_found) {
            for (int i = k; i < 12; i++) {
                if (expression.charAt(i) == '?') {
                    if (i == 0 || expression.charAt(i - 1) == ' ') {
                        for (int j = 1; j <= 9; j++) {
                            System.out.println('0' + j);
                            Try(expression.substring(0, i) + ('0' + j) + expression.substring(i + 1),
                                    math_symbol, i + 1);
                        }
                    } else {
                        for (int j = 1; j <= 9; j++) {
                            System.out.println('0' + j);
                            Try(expression.substring(0, i) + ('0' + j) + expression.substring(i + 1),
                                    math_symbol, i + 1);
                        }
                    }
                }
            }
        }
        if (check_expression(expression, math_symbol)) {
            System.out.println(expression);
            not_found = false;
        }
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        sc.nextLine();
        while (n-- > 0) {
            String expression = sc.nextLine();
            char[] math_symbols = {'+', '-', '*', '/'};
            char math_symbol = expression.charAt(3);
            not_found = true;
            if (math_symbol == '?') {
                for (int i = 0; i < 4; i++) {
                    math_symbol = math_symbols[i];
                    if (not_found)
                        Try(expression.substring(0, 3) + math_symbol + expression.substring(4), math_symbol, 0);
                }
            } else {
                Try(expression, math_symbol, 0);
            }
            if (not_found)
                System.out.println("WRONG PROBLEM!");
        }
    }
}