# 离线只读验证：不访问网络、不操作设备，只读取同目录合成输入。
import json, math, struct, statistics
from pathlib import Path
def check(d):
 out=[]
 for x in d:
  u=x.get('unit'); v=x['value']
  if u not in ('°C','K'): out.append('单位未知')
  elif u=='K' and v<0: out.append('物理非法')
  else: out.append(round(v-273.15 if u=='K' else v,6))
 return out

if __name__=='__main__':
 fixture=json.loads(Path(__file__).with_name('fixture.json').read_text(encoding='utf-8'))
 actual=check(fixture['input'])
 assert actual==fixture['expected'], {'实际':actual,'预期':fixture['expected']}
 print(json.dumps({'状态':'通过','实际':actual,'边界':'仅离线合成样例，现场未测'},ensure_ascii=False))