Решение:

with open('9.txt', 'r') as file:
    fl = file.read().splitlines()

c = 0
for i in fl:
    line = sorted(map(int, i.split('\t')))
    flag = line[0] + line[1] == line[2] + line[3] or line[0] + line[3] == line[1] + line[2] or line[1] + line[3] == line[0] + line[2]

    if flag and line[-1] < sum(line[:-1]):
        c += 1

print(c)

Ответ: 118