# MEMO
val = [(0, 1), (1, 1), (2, 1), (3, 1), (4, 1), (5, 1), (6, 1), (7, 1), (8, 1), (9, 1), (1, 2), (2, 2), (3, 2), (4, 2), (5, 2), (6, 2), (7, 2), (8, 2), (9, 2)]

while len(val) < 5 * 10**5 + 10:
    if val[-1][0] == 9:
        val.append((0, val[-1][1] + 1))
    else:
        val.append((val[-1][0] + 1, val[-1][1]))


def get_mex(N):
    if val[N][0] == 0:
        s = "1" + str(val[N][0]) * (val[N][1] - 1)
    else:
        s = str(val[N][0]) * val[N][1]
    
    return s

T = int(input())
for _ in range(T):
    N = int(input())
    print(get_mex(N))