Compilare: main.cpp: In function 'int main()': main.cpp:57:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(l=0;l<fam.size()-1;l++) | ~^~~~~~~~~~~~~ main.cpp:58:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(o=l+1;o<fam.size();o++) | ~^~~~~~~~~~~