def part_1(data):
    num = int(data.strip())
    recipes = [3, 7]
    i, j = 0, 1

    while True:
        s = recipes[i] + recipes[j]
        ss = str(s)
        if len(ss) == 1:
            recipes.append(s)
        elif len(ss) == 2:
            recipes.append(int(ss[0]))
            recipes.append(int(ss[1]))
        else:
            assert False

        i = (i + 1 + recipes[i]) % len(recipes)
        j = (j + 1 + recipes[j]) % len(recipes)
        if i == j:
            j = (j + 1) % len(recipes)
        if len(recipes) > num + 10:
            print("".join(map(str, recipes[num : num + 10])))
            break


def part_2(data):
    target = list(map(int, data.strip()))
    recipes = [3, 7]

    i, j = 0, 1
    while True:
        s = recipes[i] + recipes[j]
        if s < 10:
            recipes.append(s)
        elif s < 100:
            recipes.append(s // 10)
            recipes.append(s % 10)
        else:
            assert False

        i = (i + 1 + recipes[i]) % len(recipes)
        j = (j + 1 + recipes[j]) % len(recipes)
        if i == j:
            j = (j + 1) % len(recipes)

        if recipes[-len(target) :] == target:
            print(len(recipes) - len(target))
        elif recipes[-len(target) - 1 : -1] == target:
            print(len(recipes) - len(target) - 1)
            break


def main():
    input_file = __file__.replace(".py", ".txt")
    with open(input_file) as f:
        data = f.read()
    part_1(data)
    part_2(data)


if __name__ == "__main__":
    main()