https://img-mid.csdnimg.cn/release/static/image/mid/ask/784595224666131.jpg
while True:
weight=int(input())
if weight>50:
pay=50*0.5+(weight-50)*0.6
else:
pay=weight*0.5
print('货物重量:%d 收费:%.1f元'%(weight,pay))
c=input('输入下一个货物的重量吗(y/n,Y/N)').lower()
if c!="y":
break
while True:
n = float(input())
tab = input("输入下一个货物的重量吗(y/n,Y/N)")
sum1 = 0
if n <= 50:
sum1 += n * 0.5
else:
sum1 += 50 * 0.5 + (n - 50) * 0.6
print("货物重量:{} 收费:{:.1f}".format(n, sum1))
if tab in ["y", "Y"]:
continue
else:
break