/in/foo.cc: In function 'void doit()':
/in/foo.cc:51:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    {for (j=1;j<=n;j++)
     ^~~
/in/foo.cc:56:6: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
      printf("\n");}
      ^~~~~~
/in/foo.cc: In function 'int dijk(int, int)':
/in/foo.cc:19:7: warning: 'k' may be used uninitialized in this function [-Wmaybe-uninitialized]
   f[k]=true;
   ~~~~^~~~~