Compilare: main.cpp: In function 'std::pair<std::vector<int>, std::vector<int> > dikj(int, std::vector<std::vector<std::pair<int, int> > >&)': main.cpp:37:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(int i=1;i<connections.size();i++) | ~^~~~~~~~~~~~~~~~~~~ main.cpp:50:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for(int i=0;i<connections[head].size();i++) | ~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:116:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 116 | for(int i=0;i<pathA.size();i++) | ~^~~~~~~~~~~~~ main.cpp:123:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 123 | for(int i=0;i<pathB.size();i++) | ~^~~~~~~~~~~~~ main.cpp:130:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 130 | for(int i=0;i<pathC.size();i++) | ~^~~~~~~~~~~~~