num = int(input()) result = set() for i in range(num): s = input() result.add(s) print(len(result))
不是，你眼睛呢？
较低效的语言可能无法通过此题，建议选手使用较快的输入方式并使用带优化的语言提交。
有丶小困 LV 2
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郑博升 LV 1 @ 2024-7-14 15:00:08
