package main import ( "bufio" "fmt" "os" ) func main() { in := bufio.NewReader(os.Stdin) out := bufio.NewWriter(os.Stdout) defer out.Flush() var n, q int fmt.Fscan(in, &n, &q) values := make([]int, n) for i := 0; i < n; i++ { fmt.Fscan(in, &values[i]) } tree := make([][]int, n) for i := 0; i < n-1; i++ { var a, b int fmt.Fscan(in, &a, &b) a-- b-- tree[a] = append(tree[a], b) tree[b] = append(tree[b], a) } ins, outs, dfsId := make([]int, n+5), make([]int, n+5), 1 depth := make([]int, n+5) var dfsOrder func(cur, pre int) dfsOrder = func(cur, pre int) { ins[cur] = dfsId for _, next := range tree[cur] { if next != pre { depth[next] = depth[cur] + 1 dfsOrder(next, cur) } } outs[cur] = dfsId dfsId += 1 } dfsOrder(0, -1) newNums := make([]int, n) for i := 0; i < n; i++ { id := outs[i] - 1 newNums[id] = values[i] } seg := NewSegmentTree(newNums) for i := 0; i < q; i++ { var op int fmt.Fscan(in, &op) if op == 1 { var root, xor int fmt.Fscan(in, &root, &xor) root-- seg.Set(outs[root]-1, seg.Get(outs[root]-1)^xor) } else { var root, o int fmt.Fscan(in, &root, &o) left, right := ins[root-1], outs[root-1] left-- res := seg.Query(left, right) fmt.Fprintln(out, res) } } } const INF int = 1e18 // PointSetRangeMin type E = int func (*SegmentTree) e() E { return 0 } func (*SegmentTree) op(a, b E) E { return a ^ b } func min(a, b int) int { if a < b { return a } return b } func max(a, b int) int { if a > b { return a } return b } type SegmentTree struct { n, size int seg []E } func NewSegmentTree(leaves []E) *SegmentTree { res := &SegmentTree{} n := len(leaves) size := 1 for size < n { size <<= 1 } seg := make([]E, size<<1) for i := 0; i < n; i++ { seg[i+size] = leaves[i] } for i := size - 1; i > 0; i-- { seg[i] = res.op(seg[i<<1], seg[i<<1|1]) } res.n = n res.size = size res.seg = seg return res } func (st *SegmentTree) Get(index int) E { if index < 0 || index >= st.n { return st.e() } return st.seg[index+st.size] } func (st *SegmentTree) Set(index int, value E) { if index < 0 || index >= st.n { return } index += st.size st.seg[index] = value for index >>= 1; index > 0; index >>= 1 { st.seg[index] = st.op(st.seg[index<<1], st.seg[index<<1|1]) } } // [start, end) func (st *SegmentTree) Query(start, end int) E { if start < 0 { start = 0 } if end > st.n { end = st.n } if start >= end { return st.e() } leftRes, rightRes := st.e(), st.e() start += st.size end += st.size for start < end { if start&1 == 1 { leftRes = st.op(leftRes, st.seg[start]) start++ } if end&1 == 1 { end-- rightRes = st.op(st.seg[end], rightRes) } start >>= 1 end >>= 1 } return st.op(leftRes, rightRes) } func (st *SegmentTree) QueryAll() E { return st.seg[1] } // 二分查询最大的 right 使得切片 [left:right] 内的值满足 predicate func (st *SegmentTree) MaxRight(left int, predicate func(E) bool) int { if left == st.n { return st.n } left += st.size res := st.e() for { for left&1 == 0 { left >>= 1 } if !predicate(st.op(res, st.seg[left])) { for left < st.size { left <<= 1 if predicate(st.op(res, st.seg[left])) { res = st.op(res, st.seg[left]) left++ } } return left - st.size } res = st.op(res, st.seg[left]) left++ if (left & -left) == left { break } } return st.n } // 二分查询最小的 left 使得切片 [left:right] 内的值满足 predicate func (st *SegmentTree) MinLeft(right int, predicate func(E) bool) int { if right == 0 { return 0 } right += st.size res := st.e() for { right-- for right > 1 && right&1 == 1 { right >>= 1 } if !predicate(st.op(st.seg[right], res)) { for right < st.size { right = right<<1 | 1 if predicate(st.op(st.seg[right], res)) { res = st.op(st.seg[right], res) right-- } } return right + 1 - st.size } res = st.op(st.seg[right], res) if right&-right == right { break } } return 0 }