Compilare: main.cpp: In function 'int main()': main.cpp:59:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for(i=0;i<L[x].size();i++) | ~^~~~~~~~~~~~ main.cpp:77:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for(i=0;i<L[x].size();i++) | ~^~~~~~~~~~~~