Compilare: main.cpp: In function 'std::pair<std::vector<long long unsigned int>, std::vector<int> > dijk(int)': main.cpp:38:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for (int i = 0; i< adiac[nod].size(); i++) | ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void drum(int, int, std::vector<int>)': main.cpp:65:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for (int i = 0; i < rez.size(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:71:12: warning: unused variable 'j' [-Wunused-variable] 71 | int i, j, x, y, c, xmin=0; | ^