w, h, x = map(int, input().split())
if x > 36:
    print(-1)
else:
    line1 = str(x % 9) + str(int(x > 9) * 9) + "0"
    line1 *= w // 3 + 1
    line1 = line1[:w]
    line2 = str(int(x > 18) * 9) + str(int(x > 27) * 9) + "0"
    line2 *= w // 3 + 1
    line2 = line2[:w]
    line3 = "0" * w
    lines = [line1, line2, line3]
    for l in range(h):
        print(lines[l % 3])