Compilare: main.cpp: In function 'std::vector<int> inter(std::vector<int>, std::vector<int>)': main.cpp:84:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | while (i < v.size() && j < v2.size()) { | ~~^~~~~~~~~~ main.cpp:84:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | while (i < v.size() && j < v2.size()) { | ~~^~~~~~~~~~~ main.cpp:89:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | while (i < v.size()) | ~~^~~~~~~~~~ main.cpp:91:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | while (j < v2.size()) | ~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:142:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 142 | for (int i = k - 1; i < ys.size(); ++i) { | ~~^~~~~~~~~~~ main.cpp:99:9: warning: unused variable 'x' [-Wunused-variable] 99 | int x, y; | ^ main.cpp:99:12: warning: unused variable 'y' [-Wunused-variable] 99 | int x, y; | ^