# 分组上车 people_num ,car_occupy = map(int,input().split()) list_origin =list(map(int,input().split())) list_all =[] for i in range(0, people_num, car_occupy): if i+car_occupy >= people_num: list_temp = list_origin[i:people_num] list_all.append(list_temp) else: list_temp = list_origin[i:i+car_occupy] list_all.append(list_temp) len_listall = len(list_all) for j in range(len_listall-1,-1,-1): # list_all[j].sort() print(' '.join(map(str, list_all[j])), end=' ')