Compilare: main.cpp: In member function 'void Task::re(std::vector<std::vector<int> >&, int)': main.cpp:49:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i++){ ~~^~~~~~~~~~ main.cpp: In member function 'bool Task::nr_poz(std::vector<int>&, std::vector<int>&)': main.cpp:56:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < std::min(v.size(), v1.size()); i++){ ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<std::vector<int> > Task::get_result()': main.cpp:86:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < interm.size(); j++){ ~~^~~~~~~~~~~~~~~ main.cpp:94:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < all.size()-1; i++){ ~~^~~~~~~~~~~~~~ main.cpp:95:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < all.size()-i-1; j++){ ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'void Task::print_output(std::vector<std::vector<int> >)': main.cpp:117:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] (j + 1 != result[i].size() ? ' ' : '\n'); ~~~~~~^~~~~~~~~~~~~~~~~~~