Compilare: user.cpp: In constructor ‘merge_find_undo::merge_find_undo(int, const std::vector<int>&)’: user.cpp:18:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < marked.size(); ++i){ ^ user.cpp: In function ‘void do_test(std::ifstream&, std::ofstream&)’: user.cpp:61:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < dupa_culori[0].size(); ++i){ ^ user.cpp:72:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < dupa_culori[i].size(); ++j){ ^ user.cpp:81:75: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] rez += (mfu.query_cost_subarb(dupa_culori[0][0]) == dupa_culori[0].size()); ^