2018ACM-ICPC中國大學生程序設計競賽線上賽I. Reversion Count(數論&規律)

題目連接：https://nanti.jisuanke.com/t/26217ide  26.87%  1000ms  65536K   Description:code There is a positive integer X, X's reversion count is Y. For example, X=123, Y=321; X=1234, Y=4321. Z=(X-Y)/9, Jud

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