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06 2019 档案

[20jint nhhhhfdgdfI. Skr
摘要：A number is skr, if and only if it's unchanged after being reversed. For example, "12321", "11" and "1" are skr numbers, but "123", "221" are not. FYW 阅读全文
posted @ 2019-06-29 09:30 Through_The_Night 阅读(100) 评论(0) 推荐(0)