输出的是你的公里数1元折扣(分段函数嘛)
s = int(input("请输入公里数:"))
m1=m2=m3=m4=m5=0
if(s<250):
m0=1
elif(s>=250 and s<500):
m0=m1=1
elif(s>=500 and s<1000):
m0=m1=m2=1
elif(s>=1000 and s<2000):
m0=m1=m2=m3=1
elif(s>=2000 and s<3000):
m0=m1=m2=m3=m4=1
else:
m0=m1=m2=m3=m4=m5=1
s = s*m0 + (s-250)*0.98*m1 + (s-500)*0.95*m2 + (s-1000)*0.95*m3 + (s-2000)*0.9*m4 + (s-3000)*0.85*m5
print(s)