Compilare: user.cpp: In function ‘void bfs()’: user.cpp:30:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] used[x][y] = 0; ^ user.cpp:30:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] used[x][y] = 0; ^ user.cpp:35:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[newx][newy] < dp[x][y] - v[newx][newy]){ ^ user.cpp:35:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[newx][newy] < dp[x][y] - v[newx][newy]){ ^ user.cpp:35:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[newx][newy] < dp[x][y] - v[newx][newy]){ ^ user.cpp:35:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[newx][newy] < dp[x][y] - v[newx][newy]){ ^ user.cpp:35:46: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[newx][newy] < dp[x][y] - v[newx][newy]){ ^ user.cpp:35:52: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[newx][newy] < dp[x][y] - v[newx][newy]){ ^ user.cpp:36:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[newx][newy] = dp[x][y] - v[newx][newy]; ^ user.cpp:36:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[newx][newy] = dp[x][y] - v[newx][newy]; ^ user.cpp:36:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[newx][newy] = dp[x][y] - v[newx][newy]; ^ user.cpp:36:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[newx][newy] = dp[x][y] - v[newx][newy]; ^ user.cpp:36:45: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[newx][newy] = dp[x][y] - v[newx][newy]; ^ user.cpp:36:51: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[newx][newy] = dp[x][y] - v[newx][newy]; ^ user.cpp:37:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(used[newx][newy] == 0){ ^ user.cpp:37:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(used[newx][newy] == 0){ ^ user.cpp:39:22: warning: array subscript has type ‘char’ [-Wchar-subscripts]