/in/foo.cc: In function 'int main()':
/in/foo.cc:13:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   13 |         sort(a[i],a[i] + n);
      |         ^~~~
      |         short
/in/foo.cc:17:19: error: 'setw' was not declared in this scope; did you mean 'getw'?
   17 |             cout<<setw(6)<<a[i][j];
      |                   ^~~~
      |                   getw