Compilare: main.cpp: In member function 'std::vector<Edge> Graph::Prim(Graph&)': main.cpp:332:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Node>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 332 | for(int i = 1; i <= graph.nodes.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:340:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Node>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 340 | for(int i = 1; i <= graph.nodes.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:344:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Node>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 344 | for(int j = 1; j <= graph.nodes.size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:356:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Node>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 356 | for(int j = 1; j <= graph.nodes.size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:368:5: warning: no return statement in function returning non-void [-Wreturn-type] 368 | } | ^