Compilare: main.cpp: In function 'std::vector<int> inter(std::vector<int>, std::vector<int>)': main.cpp:25:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | while (i < v.size() && j < v2.size()) { | ~~^~~~~~~~~~ main.cpp:25:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | while (i < v.size() && j < v2.size()) { | ~~^~~~~~~~~~~ main.cpp:30:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | while (i < v.size()) | ~~^~~~~~~~~~ main.cpp:32:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | while (j < v2.size()) | ~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:83:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for (int i = k - 1; i < ys.size(); ++i) { | ~~^~~~~~~~~~~ main.cpp:40:9: warning: unused variable 'x' [-Wunused-variable] 40 | int x, y; | ^ main.cpp:40:12: warning: unused variable 'y' [-Wunused-variable] 40 | int x, y; | ^