text: /*Descrição:
  
  Clock shows 'h' hours, 'm' minutes and 's' seconds after midnight.
  
  Your task is to make 'Past' function which returns time converted to milliseconds.
  Example:
  
  {h: 0, m: 1, s: 1} => res: 61000
  
  Input constraints: 0 <= h <= 23, 0 <= m <= 59, 0 <= s <= 59
  */
  select (h*3600 + m*60 + s)*1000 as res 
  from past