Compilare: user.cpp: In function ‘int main()’: user.cpp:52:8: warning: unused variable ‘a’ [-Wunused-variable] int a = Heap.top().first; ^ user.cpp:34:10: warning: unused variable ‘j’ [-Wunused-variable] int i , j , k , x, y , node ; ^ user.cpp:34:14: warning: unused variable ‘k’ [-Wunused-variable] int i , j , k , x, y , node ; ^ user.cpp:34:18: warning: unused variable ‘x’ [-Wunused-variable] int i , j , k , x, y , node ; ^ user.cpp:34:21: warning: unused variable ‘y’ [-Wunused-variable] int i , j , k , x, y , node ; ^