Compilare: main.cpp: In function 'int main()': main.cpp:80:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | for(int i = 0;i < l.size();i++) | ~~^~~~~~~~~~ main.cpp:96:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for(int j = 0;j < v1.size();j++) | ~~^~~~~~~~~~~