/in/foo.cc: In function 'int main()':
/in/foo.cc:29:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for (i=0;i<n;i++)
     ^~~
/in/foo.cc:31:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  Sort(a,n,k);
  ^~~~