/in/foo.cc: In function 'int main()':
/in/foo.cc:9:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    9 |         for(int i=1;i<=sqrt(sqrt(a[n]));i++)
      |         ^~~
/in/foo.cc:11:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   11 |                 if(!ok)cout<<"-1"<<endl;
      |                 ^~