Compilare: main.cpp: In function 'int main()': main.cpp:57:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(int i=0;i<adj.size();i++) | ~^~~~~~~~~~~ main.cpp:75:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for(int i=0;i<dn.size();i++) | ~^~~~~~~~~~ main.cpp:91:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | for(int i=0;i<adj.size();i++) | ~^~~~~~~~~~~