/in/foo.cc: In function 'void Dijkstra(int)':
/in/foo.cc:26:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j;
        ^
/in/foo.cc: In function 'int Main()':
/in/foo.cc:87:10: warning: unused variable 'ykb' [-Wunused-variable]
  int i,j,ykb;
          ^~~