Compilare: main.cpp: In function 'int main()': main.cpp:29:29: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 29 | if (vecin[i].size() < k) | ~~~~~~~~~~~~~~~~^~~~ main.cpp:39:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for (int i = 0; i < vecin[x].size(); i++) | ~~^~~~~~~~~~~~~~~~~