Compilare: main.cpp: In function 'int main()': main.cpp:22:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for (i=0;i<v[1].size();i++) | ~^~~~~~~~~~~~ main.cpp:39:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for (int i=0;i<v[nodOr].size();i++) | ~^~~~~~~~~~~~~~~~