!7

p-exp {
  int correct = 0;
  //for (int b : ll(-3, 3))
  int b = 3; // always positive
    for (int a = -7; a <= 7; a++) {
      //int x = a < 0 ? b - (-a) % b : a % b;
      int x = a < 0 ? b-1 - (-a-1) % b : a % b;
      int y = mod(a, b);
      if (x != y)
        printStructs(+a, +b, +x, +y);
      else ++correct;
    }
  print("Correct: " + correct);
}