def main():
    N = list(map(int, list(input())))

    count = 1
    for n in N:
        if n in (1,2,3,5,7):
            count += 2
        elif n in (0,4,6,9):
            count += 3
        else:
            count += 4

    print(count)


if __name__ == "__main__":
    main()