How do we check if the round is rated for sure?

The round is rated for sure if anyone's rating has changed, that is, if a_i ≠ b_i for some i.

How do we check if the round is unrated for sure?

Given that all a_i = b_i, the round is unrated for sure if for some i < j we have a_i < a_j. This can be checked using two nested for-loops over i and j.

Exercise: can you check the same using one for-loop?

How do we find that it's impossible to determine if the round is rated or not?

If none of the conditions from steps 1 and 2 is satisfied, the answer is "maybe".

n = int(input())
results = []
for i in range(n):
    results.append(list(map(int, input().split())))

for r in results:
    if r[0] != r[1]:
        print("rated")
        exit()

for i in range(n):
    for j in range(i):
        if results[i][0] > results[j][0]:
            print("unrated")
            exit()

print("maybe")