/in/foo.cc: In function 'void dijkstra1(int)':
/in/foo.cc:50:15: warning: unused variable 'd' [-Wunused-variable]
   int u=fnt.u,d=fnt.dis;
               ^
/in/foo.cc: In function 'void dijkstra2(int)':
/in/foo.cc:79:15: warning: unused variable 'd' [-Wunused-variable]
   int u=fnt.u,d=fnt.dis;
               ^