
const char WeekDay[7][4] = {"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"};

int main()
{
  long y, m, d, res;
  scanf("%ld %ld %ld", &y, &m, &d);
  res = 0;
  // count years. note that 365 % 7 = 1, 366 % 7 = 2 and year xx00 has only 365 days xx % 4 != 0
  res += (y - 1) * 1 % 7;
  res += (y - 1) / 4 % 7;
  res -= (y - 1) / 100 % 7;
  res += (y - 1) / 400 % 7;

  // count months
  //Assume February has 30 days. 30 % 7 = 2; 31 % 7 = 3;
  //After August
  if (m > 8)
  {
    res += (m - 7) / 2 * 3 + (m - 8) / 2 * 2;
    res += 3 * 2 + 4 * 3;
  } else
  res += (m - 1) / 2 * 2 + m / 2 * 3;
  //February
  if (m > 2)
  if ((y % 4 == 0 && y % 100 != 0) || y % 400 == 0) res -= 1; else res -= 2;
  res %= 7;

  //count days
  res += d - 1;
  res %= 7;

  printf("%s.\n", WeekDay[res]);
}
