foo.cc:4: warning: ignoring ‘#pragma GCC optimaze’ [-Wunknown-pragmas]
    4 | #pragma GCC optimaze(3)
      | 
foo.cc: In function ‘int main()’:
foo.cc:12:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   12 |     for(int i=1;i<=n;i++)cin>>a[i];cin>>m;
      |     ^~~
foo.cc:12:36: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   12 |     for(int i=1;i<=n;i++)cin>>a[i];cin>>m;
      |                                    ^~~