Xor sum

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

k= [0]*(n+1)
for i in range(n):
    k[i+1] = k[i]^x[i]

for j in range(q):
    a,b = map(int,input().split())
    print(k[b]^k[a-1])

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED