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')))
    if line[-1] < sum(line[:-1]) and len(set(line)) == 3:
        c += 1
print(c)

Ответ: 147