第7关：二手房数据统计

def sort_house(row, k, n):
    print(' '.join(lt))
    for i in sorted(ls, key=lambda x:eval(x[row]), reverse = k)[:n]:
        print(' '.join(i))

with open('step8/house.csv', 'r', encoding='utf-8') as f:
    ls=[]
    lt=f.readline().strip().split(',')
    for i in f.readlines():
        ls.append(i.strip().split(','))

n=input()
if n=='最高总价':
    t=int(input())
    sort_house(8,1,t)
elif n=='最低总价':
    t=int(input())
    sort_house(8,0,t)
elif n=='最大面积':
    t=int(input())
    sort_house(7,1,t)
elif n=='最小面积':
    t=int(input())
    sort_house(7,0,t)
elif n=='最低单价':
    print(' '.join(lt))
    ls = sorted(ls, key=lambda x:eval(x[8])/eval(x[7]), reverse = False)[0]
    print(' '.join(ls))
elif n=='最高单价':
    print(' '.join(lt))
    ls = s