2565_1_Quiz_1_2.py #

def f1(a, b, c):
    return min(filter(lambda x: x > 0, (a, b, c)))


def f2(a, b, c):
    return max(filter(lambda x: x < 0, (a, b, c)))


def f3(a, b, c):
    return int(str(abs(a + b + c))[0])


def f4(a, b, c):
    return int(str(a + b + c)[-1])


def main():
    s1, s2, a, b, c = (int(k) for k in input().split(' '))

    if s1 == 0 and s2 == 0:
        print(f1(a, b, c))
    elif s1 == 0 and s2 == 1:
        print(f2(a, b, c))
    elif s1 == 1 and s2 == 0:
        print(f3(a, b, c))
    elif s1 == 1 and s2 == 1:
        print(f4(a, b, c))
    else:
        print("Error")


exec(input().strip())