Compilare: main.cpp: In function 'int dij()': main.cpp:29:28: 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 (int i = 0 ; i < v[nod].size () ; i++) | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:102:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 102 | for (int j = 0 ; j < v[i].size () ; j++) | ~~^~~~~~~~~~~~~~ main.cpp:112:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 112 | for (int j = 0 ; j < v[i].size () ; j++) | ~~^~~~~~~~~~~~~~