tao_can = 49ll = 10zj =int(input("请输入您的流量："))if zj <= 10:print("您本月花费49元")elif 10< zj <=20:tao_can = tao_can+(zj - ll)*1print("您本月花费{}元".format(tao_can))elif 20< zj<=50:tao_can = tao_can+(zj-ll)*2print(f"您本月花费{tao_can}元")else:tao_can = tao_can+(zj -ll)*5print("你本月花费%d" % tao_can)
# 流量计算1.每个月49套餐 10G流量 超出1G收费1/G元 超出20G开始收费2元/G 超出50G后开始收费5元/G
