Compiler output
prog.cpp: In function 'int main()':
prog.cpp:91:18: warning: array subscript has type 'char' [-Wchar-subscripts]
blocked[x][y] = blocked[y][x] = true;
^
prog.cpp:91:21: warning: array subscript has type 'char' [-Wchar-subscripts]
blocked[x][y] = blocked[y][x] = true;
^
prog.cpp:91:34: warning: array subscript has type 'char' [-Wchar-subscripts]
blocked[x][y] = blocked[y][x] = true;
^
prog.cpp:91:37: warning: array subscript has type 'char' [-Wchar-subscripts]
blocked[x][y] = blocked[y][x] = true;
^
