if __name__ == '__main__':
    n = list(input())

    ans = 0
    for i in range(0, len(n)):
        if n[i] == '1' or n[i] == '2' or n[i] == '3' or n[i] == '5' or n[i] == '7':
            ans += 2
        elif n[i] == '0' or n[i] == '4' or n[i] == '6' or n[i] == '9':
            ans += 3
        else:
            ans += 4

    ans += 1

    print(ans)