Untitled

def getUnexpiredTokens(time_to_live, queries):
  
  tokens = {}
  for query in queries:
    query_type = query[0]
    if query_type == "generate":
      token_id = query[1]
      current_time = int(query[2])
      tokens[token_id] = (current_time + time_to_live, current_time)

    elif query_type == "renew":
      token_id = query[1]
      current_time = int(query[2])
      if token_id in tokens and tokens[token_id][0] > current_time:
        tokens[token_id] = (current_time + time_to_live, current_time)

    elif query_type == "count":
      current_time = int(query[1])
      count = 0
      for token_id in tokens:
        if tokens[token_id][0] > current_time:
          count += 1
      yield count