题解 | 小y的考试

T = int(input())
for _ in range(T):
    A = len(input())
    B = len(input())
    C = len(input())
    D = len(input())
    v = [A, B, C, D]
    mp = {A: 'A', B: 'B', C: 'C', D: 'D'}
    v.sort()
    l = min(v)
    r = max(v)
    if v.count(l) == 1:
        print(mp[l])
    elif v.count(r) == 1:
        print(mp[r])
    else:
        print("C")

简单的思路