BOJ - 14245 - XOR

import sys, math

def init(arr, tree, node, start, end):
    if start == end:
        tree[node] = arr[start]
        return tree[node]

    mid = (start + end) // 2
    tree[node] = init(arr, tree, node * 2, start, mid) ^ \
                 init(arr, tree, node * 2 + 1, mid + 1, end)
    return tree[node]

def updateLazyTree(tree, lazy, node, start, end):
    if lazy[node] != 0:
        tree[node] ^= lazy[node] * ((end - start + 1) % 2)
        if start != end:
            lazy[node * 2] ^= lazy[node]
            lazy[node * 2 + 1] ^= lazy[node]
        lazy[node] = 0

def updateValue(tree, lazyTree, node, start, end, left, right, value):
    updateLazyTree(tree, lazyTree, node, start, end)

    if (right < start or end < left): return tree[node]
    elif (left <= start and end <= right):
        tree[node] ^= value * ((end - start + 1) % 2)
        if start != end:
            lazyTree[node * 2] ^= value
            lazyTree[node * 2 + 1] ^= value
        return tree[node]

    mid = (start + end) // 2
    tree[node] = updateValue(tree, lazyTree, node * 2, start, mid, left, right, value) ^ \
                 updateValue(tree, lazyTree, node * 2 + 1, mid + 1, end, left, right, value)
    return tree[node]

def xorValue(tree, lazy, node, start, end, left, right):
    updateLazyTree(tree, lazy, node, start, end)
    if (right < start or end < left): return 0
    elif (left <= start and end <= right): return tree[node]

    mid = (start + end) // 2
    return xorValue(tree, lazy, node * 2, start, mid, left, right) ^ \
           xorValue(tree, lazy, node * 2 + 1, mid + 1, end, left, right)

def solution():
    N = int(sys.stdin.readline())
    arr = list(map(int, sys.stdin.readline().split()))

    height = int(math.ceil(math.log2(N)))
    treeSize = 1 << (height + 1)
    segmentTree = [0] * treeSize
    lazySegmentTree = [0] * treeSize

    init(arr, segmentTree, 1, 0, N-1)
    M = int(sys.stdin.readline())
    for i in range(M):
        command = list(map(int, sys.stdin.readline().split()))

        if command[0] == 1:
            updateValue(segmentTree, lazySegmentTree, 1, 0, N-1, command[1], command[2], command[3])
        else:
            print(xorValue(segmentTree, lazySegmentTree, 1, 0, N-1, command[1], command[1]))

solution()

https://www.acmicpc.net/problem/14245