// AC: 171 ms

// Memory: 0 KB

// Greedy.

// T:O(t), S:O(1)

//

import java.util.Scanner;

public class CodeForces_1462C_Unique_Number {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

int t = sc.nextInt(), ret = 0;

for (int i = 0; i < t; i++) {

int x = sc.nextInt();

if (x > 45) {

ret = -1;

} else if (x < 10) {

ret = x;

} else {

StringBuilder sb = new StringBuilder();

int pos = 9;

while (x > 0) {

if (x >= pos) {

sb.append(pos);

x -= pos;

pos--;

} else {

sb.append(x);

break;

}

}

ret = Integer.parseInt(sb.reverse().toString());

}

System.out.println(ret);

}

}

}