Compilare: main.cpp: In function 'std::vector<int> get(std::vector<int>)': main.cpp:14:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(int i=0; i<v.size(); i++) | ~^~~~~~~~~ main.cpp: At global scope: main.cpp:33:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 33 | main() | ^~~~