Compilare: main.cpp: In function 'int main()': main.cpp:41:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (i=0; i<v[nod].size (); i++) | ~^~~~~~~~~~~~~~~ main.cpp:62:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | for (i=0; i<v[nod].size (); i++) | ~^~~~~~~~~~~~~~~ main.cpp:83:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for (i=0; i<v[nod].size (); i++) | ~^~~~~~~~~~~~~~~