import sys
N, K = map(int, raw_input().split())
n = N
turn = 0
while n - (K + 1) > 0:
    n -= K + 1
    turn += 1
if turn % 2 == 0:
    print 0
    
while 1:
    B = int(raw_input())
    if B >= N: break
    print K + 1 - B
    sys.flush()