Aita

#!/usr/bin/env python3

def siksak(n):
    eka = n // 2 + 1
    b_sarja = range(eka, n + 1)
    a_sarja = range(1, eka)
    for b, a in zip(b_sarja, a_sarja):
        yield str(b)
        yield str(a)
    if n % 2:
        yield str(n)

def main():
    n, k = map(int, input().split())
    if 2 * k > n:
        print('QAQ')
        return
    print(' '.join(siksak(n)))

if __name__ == '__main__':
    main()

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: ACCEPTED