puzzle2.cc

#include <iostream>
using namespace std;

void operator"" _x(decltype(0ull)) {
  try {
    cout << 1001 - (cin.iword(0)-- + 1000 ?: (throw(""), 7)) << " ";
  } catch (...) {
    return;                                                                                             }                                                                                                     0_x;                                                                                                  cerr << 1004 - clog.xalloc() << " ";
  }
  0_x;
  cerr << 999 + 2 + --errno << " ";
}

int main() { 1_x; }