def problem_p03704(input_data): def func(d, cnt9, cnt0): if cnt9 < 1: return d == 0 n = int("9" * cnt9 + "0" * cnt0) return sum( func(d + i * n, cnt9 - 2, cnt0 + 1) * (9 - abs(i) + 1 - (cnt0 < 1)) for i in range(-9, 10) if abs(d + i * n) < n ) D = eval(input_data) return sum(func(D, i, 0) * (10 - i % 2 * 9) for i in range(1, 21))