Compilare: user.cpp: In function ‘void prim()’: user.cpp:5:24: warning: integer overflow in expression [-Woverflow] #define inf (1 << 31) -1 ^ user.cpp:27:19: note: in expansion of macro ‘inf’ dist[i] = inf; ^ user.cpp:5:24: warning: integer overflow in expression [-Woverflow] #define inf (1 << 31) -1 ^ user.cpp:34:16: note: in expansion of macro ‘inf’ minn = inf; ^