sS ai_parsePersonHeightStatement(S input) null on exception {
  Pair<Int> numbers = listToPair(map parseInt(regexpFirstGroupsIC("(\\d+)\\D+(\\d+)", input)));
  if (numbers != null) {
    int a, b = unpair numbers;
    if (a >= 5 && a <= 6 && b >= 0 && b <= 11)
      ret a + " foot " + b;
    else if (a >= 1 && a <= 2 && b >= 0 && b <= 99)
      ret a + "," + formatInt(b, 2) + " m";
  }
  
  int cm = parseFirstInt(input);
  if (cm >= 100 && cm <= 250)
    ret "Aha, you are " + cm + " cm";
    
  null;
}