Compilare: user.cpp: In function ‘void Dijkstra(int)’: user.cpp:10:21: warning: integer overflow in expression [-Woverflow] #define INF (1<<31)-1 ^ user.cpp:49:47: note: in expansion of macro ‘INF’ for( int i(1) ; i <= N ; dist[i].distance=INF,dist[i].val=INF,++i); ^ user.cpp:10:21: warning: integer overflow in expression [-Woverflow] #define INF (1<<31)-1 ^ user.cpp:49:63: note: in expansion of macro ‘INF’ for( int i(1) ; i <= N ; dist[i].distance=INF,dist[i].val=INF,++i); ^ user.cpp:48:9: warning: unused variable ‘dista’ [-Wunused-variable] int dista,newnode; ^ user.cpp: In function ‘void Write()’: user.cpp:10:21: warning: integer overflow in expression [-Woverflow] #define INF (1<<31)-1 ^ user.cpp:87:37: note: in expansion of macro ‘INF’ if( dist[final_node].distance != INF ) ^