Xor sum

n, q = list(map(int, input().split()))
arr = list(map(int, input().split()))
queries = [list(map(int, input().split())) for _ in range(q)]

for a, b in queries:
  xor_sum = 0
  for i in range(a-1, b):
    xor_sum ^= arr[i]
  print(xor_sum)

Test 1

Verdict: ACCEPTED

Test 2

Verdict: TIME LIMIT EXCEEDED