Compilare: main.cpp: In function 'int main()': main.cpp:105:9: warning: unused variable 'cost_total' [-Wunused-variable] 105 | int cost_total = kruskal_1(); | ^~~~~~~~~~ main.cpp: In function 'int kruskal_2(int, int)': main.cpp:77:1: warning: control reaches end of non-void function [-Wreturn-type] 77 | } | ^