Compilare: main.cpp: In function 'void Prim(int, int, std::vector<std::pair<int, int> >&)': main.cpp:17:11: warning: unused variable 'i' [-Wunused-variable] 17 | int u,i,v,j; | ^ main.cpp:17:15: warning: unused variable 'j' [-Wunused-variable] 17 | int u,i,v,j; | ^ main.cpp: In function 'int main()': main.cpp:67:26: warning: unused variable 'j' [-Wunused-variable] 67 | int m,n, x,y,c,i,j,s,mc; | ^ main.cpp:67:28: warning: unused variable 's' [-Wunused-variable] 67 | int m,n, x,y,c,i,j,s,mc; | ^ main.cpp:67:30: warning: unused variable 'mc' [-Wunused-variable] 67 | int m,n, x,y,c,i,j,s,mc; | ^~