Eroare de compilare: main.cpp: In function 'double calculate_distance(double, double, double, double)': main.cpp:13:24: error: 'sqrt' was not declared in this scope 13 | return sqrt((x1-x2)*(x1-x2) + (y1-y2)*(y1-y2)); | ^~~~ main.cpp: In member function 'double Graph::prims_algorithm(int)': main.cpp:28:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for (int i = 0; i < nodes_positions.size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:34:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (int j = 0; j < nodes_positions.size(); ++j) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:47:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int j = 0; j < nodes_positions.size(); ++j) | ~~^~~~~~~~~~~~~~~~~~~~~~~~ Non zero exit status: 1