Compilare: main.cpp: In function 'void prim(int, std::vector<std::vector<std::pair<int, int> > >&, std::vector<std::pair<int, int> >&)': main.cpp:22:13: warning: unused variable 'current_cost' [-Wunused-variable] 22 | int current_cost = c[0]; | ^~~~~~~~~~~~ main.cpp: In function 'int LCA(int, int, const std::vector<std::pair<int, int> >&)': main.cpp:53:1: warning: control reaches end of non-void function [-Wreturn-type] 53 | } | ^