Xor sum

n_count, q_count = map(int, input().split())
n = list(map(int, input().split()))
q = [list(map(int, input().split())) for _ in range(q_count)]
x_sum = []


for i in range(q_count):
    x_sum.append([])
    sum = n[q[i][0] - 1]

    for j in n[q[i][0] : q[i][1]]:
        sum ^= j

    x_sum[-1].append(sum)


for i in x_sum:
    print(i[0])

Test 1

Verdict: ACCEPTED

Test 2

Verdict: TIME LIMIT EXCEEDED