Compilare: main.cpp: In function 'std::vector<std::pair<int, int> > allDistances(std::vector<std::vector<std::pair<int, int> > >&, std::vector<int>&)': main.cpp:14:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for (int i = 0; i < forts.size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp:27:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for (int j = 0; j < v[p.second].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:72:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for (int i = 1; i < distances.size(); i++) | ~~^~~~~~~~~~~~~~~~~~