Buggy python submission (verdict: Time Limit Exceeded):
def examA():
    N = DI()/dec(7)
    ans = N
    print(N)
    return

def examB():
    N, K = LI()
    A = LI()
    maxA = max(A)

    def function(s):
        stack = deque()
        num = [0]*(maxA+1)
        for i in range(s,N):
            a = A[i]
            if num[a]==0:
                stack.append(a)
                num[a] += 1
            else:
                while(num[a]>0):
                    num[stack.pop()] -= 1

        return stack

    B = [-1 for _ in range(N)]
    que = {}
    for i in range(N):
        a = A[i]
        if a not in que:
            que[a] = i
        else:
            prev = que.pop(a)
            B[prev] = i - prev
            que[a] = i
    i = 0
    while(que):
        a = A[i]
        if a in que:
            prev = que.pop(a)
            B[prev] = N + i - prev
        i += 1
    #print(B)
    locat_doubling = [[-1]*N for _ in range(61)]

    for i in range(N):
        locat_doubling[0][i] = 0
        locat_doubling[1][i] = B[i] + 1

    for k in range(2,61):
        for i in range(N):
            locat_doubling[k][i] = locat_doubling[k-1][i] + locat_doubling[k-1][(i+locat_doubling[k-1][i])%N]
    #print(locat_doubling[:5])
    now = 0
    rest = K*N
    for i in range(61)[::-1]:
        if locat_doubling[i][now]<=rest:
            rest -= locat_doubling[i][now]
            now = (locat_doubling[i][now]+now)%N
    #print(rest,now)

    ans = function(now)
    print(" ".join(map(str,ans)))
    return

def examC():
    ans = 0
    print(ans)
    return

def examD():
    ans = 0
    print(ans)
    return

def examE():
    ans = 0
    print(ans)
    return

def examF():
    ans = 0
    print(ans)
    return

from decimal import getcontext,Decimal as dec
import sys,bisect,itertools,heapq,math,random
from copy import deepcopy
from heapq import heappop,heappush,heapify
from collections import Counter,defaultdict,deque
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
def I(): return int(input())
def LI(): return list(map(int,sys.stdin.readline().split()))
def DI(): return dec(input())
def LDI(): return list(map(dec,sys.stdin.readline().split()))
def LSI(): return list(map(str,sys.stdin.readline().split()))
def LS(): return sys.stdin.readline().split()
def SI(): return sys.stdin.readline().strip()
global mod,mod2,inf,alphabet,_ep
mod = 10**9 + 7
mod2 = 998244353
inf = 10**18
_ep = dec("0.000000000001")
alphabet = [chr(ord('a') + i) for i in range(26)]
alphabet_convert = {chr(ord('a') + i): i for i in range(26)}

getcontext().prec = 28

sys.setrecursionlimit(10**7)

if __name__ == '__main__':
    examB()

"""
142
12 9 1445 0 1
asd dfg hj o o
aidn
"""

Fixed submission:
def examA():
    N = DI()/dec(7)
    ans = N
    print(N)
    return

def examB():
    N, K = LI()
    A = LI()
    maxA = max(A)

    def function(s):
        stack = deque()
        num = [0]*(maxA+1)
        for i in range(s,N):
            a = A[i]
            if num[a]==0:
                stack.append(a)
                num[a] += 1
            else:
                while(num[a]>0):
                    num[stack.pop()] -= 1

        return stack

    B = [-1 for _ in range(N)]
    que = {}
    for i in range(N):
        a = A[i]
        if a not in que:
            que[a] = i
        else:
            prev = que.pop(a)
            B[prev] = i - prev
            que[a] = i
    i = 0
    while(que):
        a = A[i]
        if a in que:
            prev = que.pop(a)
            B[prev] = N + i - prev
        i += 1
    #print(B)
    locat_doubling = [[-1]*N for _ in range(51)]

    for i in range(N):
        locat_doubling[0][i] = 0
        locat_doubling[1][i] = B[i] + 1

    for k in range(2,51):
        for i in range(N):
            locat_doubling[k][i] = locat_doubling[k-1][i] + locat_doubling[k-1][(i+locat_doubling[k-1][i])%N]
            if locat_doubling[k][i]>inf:
                locat_doubling[k][i] = inf
    #print(locat_doubling[:5])
    now = 0
    rest = K*N
    for i in range(51)[::-1]:
        if locat_doubling[i][now]<=rest:
            rest -= locat_doubling[i][now]
            now = (locat_doubling[i][now]+now)%N
    #print(rest,now)

    ans = function(now)
    print(" ".join(map(str,ans)))
    return

def examC():
    ans = 0
    print(ans)
    return

def examD():
    ans = 0
    print(ans)
    return

def examE():
    ans = 0
    print(ans)
    return

def examF():
    ans = 0
    print(ans)
    return

from decimal import getcontext,Decimal as dec
import sys,bisect,itertools,heapq,math,random
from copy import deepcopy
from heapq import heappop,heappush,heapify
from collections import Counter,defaultdict,deque
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
def I(): return int(input())
def LI(): return list(map(int,sys.stdin.readline().split()))
def DI(): return dec(input())
def LDI(): return list(map(dec,sys.stdin.readline().split()))
def LSI(): return list(map(str,sys.stdin.readline().split()))
def LS(): return sys.stdin.readline().split()
def SI(): return sys.stdin.readline().strip()
global mod,mod2,inf,alphabet,_ep
mod = 10**9 + 7
mod2 = 998244353
inf = 10**18
_ep = dec("0.000000000001")
alphabet = [chr(ord('a') + i) for i in range(26)]
alphabet_convert = {chr(ord('a') + i): i for i in range(26)}

getcontext().prec = 28

sys.setrecursionlimit(10**7)

if __name__ == '__main__':
    examB()

"""
142
12 9 1445 0 1
asd dfg hj o o
aidn
"""