Compilare: main.cpp: In function 'int main()': main.cpp:92:39: warning: self-comparison always evaluates to true [-Wtautological-compare] 92 | else if(mat[i - 1][j] == mat[i-1][j] && mat[i][j] != mat[i-1][j]){ | ~~~~~~~~~~~~~ ^~ ~~~~~~~~~~~ main.cpp:81:14: warning: 'qqq' may be used uninitialized in this function [-Wmaybe-uninitialized] 81 | char qqq; | ^~~ main.cpp:103:42: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] 103 | fout << x << " " << y << "\n" << qqq; | ^~~ main.cpp:103:22: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] 103 | fout << x << " " << y << "\n" << qqq; | ^~~