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https://codeforces.ml/contest/1440/problem/C2 This is the hard version of the problem. The difference between the versions is in the number of possible operations that can be made. You can make hacks if and only if you solved both versions of the problem.

链接：https://zoj.pintia.cn/problem-sets/91827364500/problems/91827370268 Time Limit: 1000 msMemory Limit: 65536 KB DreamGrid has just found a set of Mahjong withsuited tiles and a White Dragon tile in his pocket. Each suited tile has a suit (Character, B..