Compilare: user.cpp: In function ‘int main()’: user.cpp:4:21: warning: integer overflow in expression [-Woverflow] #define INF (1<<31)-1 ^ user.cpp:59:19: note: in expansion of macro ‘INF’ dist[i] = INF; ^ user.cpp:68:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < vf[x].size(); j++){ ^ user.cpp:4:21: warning: integer overflow in expression [-Woverflow] #define INF (1<<31)-1 ^ user.cpp:78:23: note: in expansion of macro ‘INF’ if(dist[i] == INF){ ^