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/*! \file \verbatim Copyright (c) 2007, Sylvain Paris and Fr閐o Durand Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated doc

// n后问题 #include #include class Queen { friend int nQueen(int); private: bool Place(int k); void Backtrack(int t); int n, // 皇后个数 *x; // 当前解 long sum; // 已找