Xor sum

n, q = [int(x) for x in input().split()]

array = [int(x) for x in input().split()]

for i in range(1, n):
    # print('Something', array[i], array[i-1], array[i] ^ array[i-1])
    array[i] = array[i] ^ array[i-1]

output = []
for i in range(q):
    a, b = [int(x)-1 for x in input().split()]
    # print("AB", a, b)
    if a > 0: output.append(str(array[b] ^ array[a-1]))
    else: output.append(str(array[b]))

print("\n".join(output))

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED