6 с параметром A

p = [(16, 12), (-8, -10), (18, 2), (5, -5), (-3, -9), (-10, -2), (14, 1), (20, 5)]
for a in range(-20, 30):
    cnt = 0
    for e in p:
        if not(e[0] > a or e[1] > 5):
            cnt += 1
    if cnt == 5:
        print(a)