Compilare: main.cpp: In function 'int main()': main.cpp:30:25: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 30 | while (v.size() < k) | ~~~~~~~~~^~~ main.cpp:51:29: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 51 | while (v.size() - 1 < k) | ~~~~~~~~~~~~~^~~