分析以下代码时间复杂度def gcd(a，b):
if a == 0:
return b
if b == 0:
return a
if a == b:
return a
if a>b:
return gcd(a - b，b)return gcd(a,b - a)
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence