pows = [10]
for _ in range(110):
    last = pows[-1]
    pows.append(last * 10)
n = int(input())
for _ in range(n):
    d = int(input())
    if d == 1:
        print(pows[0])
    else:
        print(pows[d - 1] - pows[d - 2])