Aita

n, k = [int(x) for x in raw_input().split(" ")]     

QAQ=False
if n % 2 == 0 and k % 2 == 1:
    print "QAQ"
    QAQ=True
   
if QAQ==False:
    lista = []
    for i in range(n,0,-1):
        lista.append(i)
        
    #print lista
    '''
    topdown_lista = []

    while(lista):
        currentMax=max(lista)
        topdown_lista.append(currentMax)
        lista.remove(currentMax)
        
    print topdown_lista
    '''
    puu_lista = []
    puu_lista.append(lista[0])
    lista.remove(lista[0])
    
    pituus=len(lista)
    left = True
    while(lista):
        
        if(left==False):
            if(pituus > k-1):
                puu_lista.append(lista[k-1])
                lista.remove(lista[k-1])
            else:
                puu_lista.append(lista[pituus-1])
                lista.remove(lista[pituus-1])
        else:
            if(pituus > k-1):
                puu_lista.insert(0,lista[k-1])
                lista.remove(lista[k-1])
            else:
                puu_lista.insert(0,lista[pituus-1])
                lista.remove(lista[pituus-1])
        left = not left # negate boolean
        
        pituus=pituus-1
        
    
    str_lista = "";
    for item in puu_lista:
        str_lista = str_lista + str(item) + " "
   
    print str_lista

Test 1

Group: 1

Verdict: WRONG ANSWER

Test 2

Group: 1

Verdict: WRONG ANSWER

Test 3

Group: 1

Verdict: WRONG ANSWER

Test 4

Group: 1

Verdict: WRONG ANSWER

Test 5

Group: 1

Verdict: WRONG ANSWER

Test 6

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 7

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 8

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 9

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 10

Group: 2

Verdict: WRONG ANSWER

Test 11

Group: 3

Verdict: WRONG ANSWER

Test 12

Group: 3

Verdict: WRONG ANSWER

Test 13

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 3

Verdict: WRONG ANSWER

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED