Compilare: main.cpp: In function 'int main()': main.cpp:41:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (k=0;k<q[j].size();k++) ///scoatem cate un element din multime | ~^~~~~~~~~~~~ main.cpp:49:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for (i=0;i<q[0].size();i++) | ~^~~~~~~~~~~~