def task1():
    list_of_numbers = [
        10, 25, 36, -54, 28, 68, -5, -84, 84, -69,
        -22, 16, -63, 87, 53, 21, 66, -4, 77, 87,
        48, 62, -93, -14, 8, 34, 9, 21, -14, 78,
        36, -26, -49, -90, 94, 74, -17, 7, 3, 93,
        12, 40, -37, 81, 69, -94, 67, 32, 92, 9,
        46, 61, -12, 67, -75, 7, -41, -84, -82, 19,
        -6, 5, -70, -45, 55, -27, -91, -70, -42, 84,
        55, 21, 39, 54, 10, 32, 57, -26, 34, 32,
        75, 69, 50, -86, -18, -1, 42, 97, 60, 87,
        36, 8, 99, -17, -43, 49, 95, -72, -88, -89, -24, 27, -86]

    num = int(input("Введите число"))
    if num in list_of_numbers:
        print(f'Таких чисел в спике - {list_of_numbers.count(num)}')
    else:
        print(f'Максимальное число - {max(list_of_numbers)}')

def task2():
    s1 = input()
    s2 = input()
    final = [s1[i:b + 1] for i in range(len(s1)) for b in range(len(s1))]

    arr = [i for i in final if i in s1 and i in s2 and len(i) > 1]

    last_word = ""
    for substring in arr:
        count = 0
        for ch in substring:
            if ch == " ":
                continue
            if substring.count(ch) == 1:
                count += 1
        if count > len(last_word):
            last_word = substring

    print(last_word)


def task3():
    s = input()
    out = ""
    for i in range(len(s)):
        if i % 2:
            out += s[i].lower()
        else:
            out += s[i].upper()
    print(out)

def task4():
    def PointOnTriangle(x, y, triangle):
        x1, y1 = triangle[0]
        x2, y2 = triangle[1]
        x3, y3 = triangle[2]
        sign1 = (x1 - x) * (y2 - y1) - (x2 - x1) * (y1 - y)
        sign2 = (x2 - x) * (y3 - y2) - (x3 - x2) * (y2 - y)
        sign3 = (x3 - x) * (y1 - y3) - (x1 - x3) * (y3 - y)
        if(sign1 > 0 and sign2 > 0 and sign3 > 0 or sign1 < 0 and sign2 < 0 and sign3 < 0):
            return True
        return False

    def getTriangle():
        t = []
        for i in range(3):
            str = input(f"Введите {i+1} вершину - x, y. Через пробел").split(" ")
            if str[0] == "":
                str = str[1:]
            t.append([int(str[0]), int(str[1])])
        return t

    print("Введите первый треуголник")
    triangle1 = getTriangle()

    print("Введите второй треуголник")
    triangle2 = getTriangle()

    for point in triangle1:
        if PointOnTriangle(*point, triangle2) == False:
            break
        elif triangle1.index(point) == 2:
            print("Первый треуголник во втором")

    for point in triangle2:
        if PointOnTriangle(*point, triangle1) == False:
            break
        elif triangle2.index(point) == 2:
            print("Второй треуголник в первом")

task1()
task2()
task3()
task4()