#include using namespace std; #define fst(t) std::get<0>(t) #define snd(t) std::get<1>(t) #define thd(t) std::get<2>(t) #define unless(p) if(!(p)) #define until(p) while(!(p)) using ll = long long; using P = std::tuple; const int dx[8] = {-1, 1, 0, 0, -1, -1, 1, 1}, dy[8] = {0, 0, -1, 1, -1, 1, -1, 1}; int R, K; int H, W; std::string board[30]; char _b[30][30]; void rotate(){ for(int i=0;i> R >> K; std::cin >> H >> W; for(int i=0;i> board[i]; } for(int i=0;i