from collections import deque

def main():
    N = int(input())
    A = list(map(int,input().split()))
    Z = []
    for i,a in enumerate(A):
        Z.append((a,i+1)) #1-index
    Z.sort()
    ans = []
    idx = 0
    while True:
        ans.append(Z[idx][1])
        if idx + 2 < N:
            idx += 2
            Flag = 0
        elif idx + 1 < N:
            idx += 1
            Flag = 1
        else:
            break
    if Flag == 0:
        idx -= 1
    else:
        idx -= 2
    while True:
        ans.append(Z[idx][1])
        if idx - 2 >= 0:
            idx -= 2
        elif idx - 1 >= 0:
            idx -= 1
        else:
            break

    #print(ans)
    ans.pop() #最後の2回目は不要
    ret = deque(ans)
    while ret[0] != 1:
        v = ret.popleft()
        ret.append(v)
    ret.append(1)
    print(*ret)

if __name__ == '__main__':
    main()