/in/foo.cc: In function 'void add(long long int)':
/in/foo.cc:49:21: error: 'fsort' was not declared in this scope
  if(a[i].vla)fsort(i);
                     ^
/in/foo.cc: In function 'long long int maxx(long long int)':
/in/foo.cc:64:21: error: 'fsort' was not declared in this scope
  if(a[i].vla)fsort(i);
                     ^
/in/foo.cc: In function 'long long int sum(long long int)':
/in/foo.cc:81:21: error: 'fsort' was not declared in this scope
  if(a[i].vla)fsort(i);
                     ^