r=input()
z=eval(input())
if r in ['餐前']:
if 'z'<=2.8:
print("低血糖")
if 2.8<'z'<6.1:
print("血糖正常")
if 6.1<'z'<7.0:
print("血糖受损")
if 'z'>=7.0:
print("可能为糖尿病")
if r in ['餐后']:
if 'z'<=3.9:
print('低血糖')
if 3.9<'z'<7.8:
print('血糖正常')
if 7.8<'z'<11.1:
print('血糖受损')
if 'z'>=11.1:
print('可能为糖尿病')
运行时平台报错,求帮助修改