from sys import stdin


def main():
    input = lambda: stdin.readline()[:-1]
    N = int(input())
    D = [int(input()) for _ in [0] * N]

    for d in D:
        if d == 1:
            ans = 10
        else:
            ans = 10 ** d - 10 ** (d - 1)
        print(ans)


main()