Xor sum

def xor_sum(n,arr,barr):

    prefix_xor = [0] * (n + 1)
    for i in range(1, n + 1):
        prefix_xor[i] = prefix_xor[i-1] ^ arr[i-1]

    for a,b in barr:
        result = prefix_xor[b] ^ prefix_xor[a-1]
        print(result)

n, q = map(int, input().split())
arr = list(map(int, input().split()))

barr = []
for _ in range(q):
    a, b = map(int, input().split())
    barr.append([a,b])

xor_sum(n,arr,barr)

# Input:

# 8 4
# 3 2 4 5 1 1 5 3
# 2 4
# 5 6
# 1 8
# 3 3
# Output:

# 3
# 0
# 6
# 4

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED