Buggy python submission (verdict: Runtime Error):
from collections import Counter

n, k = [int(item) for item in input().split()]
a = [int(item) for item in input().split()]
OVER_RUN = n*k

cnt = [-1] * (2 * 10**5 + 10)
transition = [[-1] * n for _ in range(58)]
transition[0] = [0 for _ in range(1,n+1)]
for i, item in enumerate(a + a):
    if cnt[item] == -1:
        cnt[item] = i
        continue
    if cnt[item] < n:
        transition[1][cnt[item]] = i+1 - cnt[item]
    cnt[item] = i

for i in range(2,58):
    for j in range(n): 
        walk = transition[i-1][j] + transition[i-1][(transition[i-1][j] + j) % n]
        if walk > OVER_RUN:
            transition[i][j] = OVER_RUN
        else:
            transition[i][j] = walk

step = 0
step_mod = 0
while True:
    itr = 57 
    while transition[itr][step_mod] + step >= OVER_RUN:
        itr -= 1
    step += transition[itr][step_mod]
    step_mod = step % n
    if itr == 0:
        break

# Simulation
target = a[step_mod:]
ans = []
cnt = Counter()
for item in target:
    if cnt[item] > 0:
        while True:
            p = ans.pop()
            if p == item:
                break
    else:
        cnt[item] += 1
        ans.append(item)
print(" ".join([str(item) for item in ans]))

Fixed submission:
from collections import Counter

n, k = [int(item) for item in input().split()]
a = [int(item) for item in input().split()]
OVER_RUN = n*k

cnt = [-1] * (2 * 10**5 + 10)
transition = [[-1] * n for _ in range(58)]
transition[0] = [0 for _ in range(1,n+1)]
for i, item in enumerate(a + a):
    if cnt[item] == -1:
        cnt[item] = i
        continue
    if cnt[item] < n:
        transition[1][cnt[item]] = i+1 - cnt[item]
    cnt[item] = i

for i in range(2,58):
    for j in range(n): 
        walk = transition[i-1][j] + transition[i-1][(transition[i-1][j] + j) % n]
        if walk > OVER_RUN:
            transition[i][j] = OVER_RUN
        else:
            transition[i][j] = walk

step = 0
step_mod = 0
while True:
    itr = 57 
    while transition[itr][step_mod] + step >= OVER_RUN:
        itr -= 1
    step += transition[itr][step_mod]
    step_mod = step % n
    if itr == 0:
        break

# Simulation
target = a[step_mod:]
ans = []
cnt = Counter()
for item in target:
    if cnt[item] > 0:
        while True:
            p = ans.pop()
            cnt[p] -= 1
            if p == item or not p:
                break
    else:
        cnt[item] += 1
        ans.append(item)
print(" ".join([str(item) for item in ans]))

Buggy python submission (verdict: Runtime Error):
from collections import Counter

n, k = [int(item) for item in input().split()]
a = [int(item) for item in input().split()]
OVER_RUN = n*k

cnt = [-1] * (2 * 10**5 + 10)
transition = [[-1] * n for _ in range(64)]
transition[0] = [0 for _ in range(1,n+1)]
for i, item in enumerate(a + a):
    if cnt[item] == -1:
        cnt[item] = i
        continue
    if cnt[item] < n:
        transition[1][cnt[item]] = i+1 - cnt[item]
    cnt[item] = i

for i in range(2,64):
    for j in range(n): 
        walk = transition[i-1][j] + transition[i-1][(transition[i-1][j] + j) % n]
        if walk > OVER_RUN:
            transition[i][j] = OVER_RUN
        else:
            transition[i][j] = walk

step = 0
step_mod = 0
while True:
    itr = 63
    while transition[itr][step_mod] + step >= OVER_RUN:
        itr -= 1
    step += transition[itr][step_mod]
    step_mod = step % n
    if itr == 0:
        break

# Simulation
target = a[step_mod:]
ans = []
cnt = Counter()
for item in target:
    if cnt[item] > 0:
        while True:
            p = ans.pop()
            if p == item:
                break
    else:
        cnt[item] += 1
        ans.append(item)
print(" ".join([str(item) for item in ans]))

Fixed submission:
from collections import Counter

n, k = [int(item) for item in input().split()]
a = [int(item) for item in input().split()]
OVER_RUN = n*k

cnt = [-1] * (2 * 10**5 + 10)
transition = [[-1] * n for _ in range(58)]
transition[0] = [0 for _ in range(1,n+1)]
for i, item in enumerate(a + a):
    if cnt[item] == -1:
        cnt[item] = i
        continue
    if cnt[item] < n:
        transition[1][cnt[item]] = i+1 - cnt[item]
    cnt[item] = i

for i in range(2,58):
    for j in range(n): 
        walk = transition[i-1][j] + transition[i-1][(transition[i-1][j] + j) % n]
        if walk > OVER_RUN:
            transition[i][j] = OVER_RUN
        else:
            transition[i][j] = walk

step = 0
step_mod = 0
while True:
    itr = 57 
    while transition[itr][step_mod] + step >= OVER_RUN:
        itr -= 1
    step += transition[itr][step_mod]
    step_mod = step % n
    if itr == 0:
        break

# Simulation
target = a[step_mod:]
ans = []
cnt = Counter()
for item in target:
    if cnt[item] > 0:
        while True:
            p = ans.pop()
            cnt[p] -= 1
            if p == item or not p:
                break
    else:
        cnt[item] += 1
        ans.append(item)
print(" ".join([str(item) for item in ans]))