import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int T = scan.nextInt();
		String []S = new String[T];
		for(int i = 0; i < T; i++) {
			S[i] = scan.next();
		}
		scan.close();
		for(int i = 0; i < T; i++) {
			solve(S[i]);
		}
	}
	public static void solve(String s) {
		int l = s.length();
		if(l == 1) {
			System.out.println(s);
			return ;
		}else {
			StringBuilder sb = new StringBuilder();
			for(int i = 0; i < l - 1; i++) {
				int s1 = Integer.parseInt(s.substring(i, i + 1));
				int s2 = Integer.parseInt(s.substring(i + 1, i + 2));
				int sum = s1 + s2;
				if(sum >= 10) {
					int k1 = sum / 10;
					int k2 = sum - 10;
					int sum2 = k1 + k2;
					sb.append(Integer.toString(sum2));
				}else {
					sb.append(Integer.toString(sum));
				}
			}
			//System.out.println(sb.length());
			solve(sb.toString());

		}

	}
}