Compilare: main.cpp: In function 'int main()': main.cpp:48:34: warning: operation on 'j' may be undefined [-Wsequence-point] 48 | else if(v[i][j] == v[i][j--]) { | ~^~ main.cpp:57:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(int i = 0; i < ans.size(); i++) | ~~^~~~~~~~~~~~