import sys
n = 0 
list1 = []
list2 = []
for line in sys.stdin:
    a = line.split()
    if n == 0:
        list1 = a
        n = 1
    elif n == 1:
        list2 =  sorted(a,key=int)
        list3 = []
        for i in range(int(list1[1])):
            list3.append(list2[i])
        print(" ".join(list3))
        n = 0

入门怎么写的如此复杂，谁来优化一下。