Below is an instruction that describes a task. Write a response that appropriately completes the request in Chinese. Please answer in Chinese.

### Instruction:
 一个游泳池有48块蓝色瓷砖和32块红色瓷砖。如果游泳池需要100块瓷砖才能完成，还需要多少块瓷砖？


### Response:
 游泳池目前有48+32 = <<48+32=80>>80块瓷砖。
游泳池还需要100-80 = <<100-80=20>>20块瓷砖才能完成。