# 15(11) РТ

def Del(n, m):
    return n % m == 0


for A in range(1, 1000):
    for x in range(1, 1000):
        if ((not (x % A == 0)) <= ((not (x % 42 == 0)) and (not (x % 36 == 0)))) == False:
            break
    else:
        print(A)
# 15(11) РТ