def even(x):    
    return  x%2==0   #自定义函数even,判断x是否为偶数
c=[3,7,1,18,9,12,5,2,22,10]
n=        ①        
h=[]
for i in         ②        :    
    for j in range(0,n-i-1):        
        if         ③        :            
            c[j],c[j+1]=        ④        
for i in range(0,n-1):         
h=filter(        ⑤        ,c)
ans=list(h)     
print(ans)