Compilare: main.cpp: In function 'int main()': main.cpp:29:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (j=0; j<=v[p].size (); j++) | ~^~~~~~~~~~~~~~ main.cpp:33:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for (j=0; j<v[p].size (); j++) | ~^~~~~~~~~~~~~ main.cpp:42:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for (i=0; i<v[nod].size (); i++) | ~^~~~~~~~~~~~~~~ main.cpp:64:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for (j=1; j<=v[p].size (); j++) | ~^~~~~~~~~~~~~~