MIN_SCORE = 75
with open('participants.txt', 'w') as file:
num_participants = int(input())
for i in range(num_participants):
name = input()
surname = input()
score = int(input())
file.write(f"{name} {surname} {score}\n")
with open('participants.txt', 'r') as file:
for line in file:
name, surname, score = line.strip().split()
if int(score) >= MIN_SCORE:
print(f"{name} {surname} allowed")
else:
print(f"{name} {surname} not allowed")
Через работу с файлами.