#1
def summa(a):
    s = 0
    for i in a:
        i = int(i)
        s += i
    return s
a = [1, 7, 42, 12, 10, 1, 4, 0]
print(summa(a))
answer: 77

# 2
def is_in_range(a, b, x):
    m = 0
    if a < b:
        if x >= a and x <= b:
            m = True
        else:
            m = False
    elif a > b:
        if x >= b and x <= a:
            m = True
        else:
            m = False
    elif a == b:
        if x == a and x == b:
            m = True
        else:
            m = False
    return m


a, b = map(int, input().split())
x = int(input())
print(is_in_range(a, b, x))

#3
def dividend(n):
    a = []
    s = 0
    for i in range(1, n):
        if n % i == 0:
            a.append(i)
    for j in a:
        s += j
    return s
# n = 6
# print(dividend(n))

def perfect(n):
    if n > 0 and n == dividend(n):
        a = True
    else:
        a = False
    return a
n = int(input())
print(perfect(n))
answer: True

#4
def palindrome(x):
    a = []
    a = [int(i) for i in str(x)]
    k = len(a)
    if k % 2 == 0:
        for j in range(0, k // 2 + 1):
            if a[j] == a[-j-1]:
                an = True
            else:
                an = False
    else:
        an = False
    return an

x = int(input())
print(palindrome(x))
False

#5
def simple(n):
    a = []
    for i in range(1, n + 1):
        if n % i == 0:
            a.append(i)
    if len(a) <= 2:
        an = True
    else:
        an = False
    return an

n = int(input())
print(simple(n))
answer: False

#6
x = int(input())
def f(x):
    if x <= 1:
        return 0
    if x <= 3:
        return 1
    else:
        return f(x-1) + f(x - 2)
print(f(x))
answer: 34