41

for i in range(10000):
    x, a, b, d = i, 0, 0, 0
    while x > 0:
        if d % 2 == 0:
            a += x%10
        else:
            b += x%10
        x //= 10
        d += 1
    if a == 14 and b == 12:
        print(i)
        break