package main import ( "bufio" "fmt" "os" "sort" "strconv" ) var sc = bufio.NewScanner(os.Stdin) var wr = bufio.NewWriter(os.Stdout) func out(x ...interface{}) { fmt.Fprintln(wr, x...) } func getI() int { sc.Scan() i, e := strconv.Atoi(sc.Text()) if e != nil { panic(e) } return i } func getF() float64 { sc.Scan() i, e := strconv.ParseFloat(sc.Text(), 64) if e != nil { panic(e) } return i } func getInts(N int) []int { ret := make([]int, N) for i := 0; i < N; i++ { ret[i] = getI() } return ret } func getS() string { sc.Scan() return sc.Text() } // min, max, asub, absなど基本関数 func max(a, b int) int { if a > b { return a } return b } func min(a, b int) int { if a < b { return a } return b } func asub(a, b int) int { if a > b { return a - b } return b - a } func abs(a int) int { if a >= 0 { return a } return -a } func lowerBound(a []int, x int) int { idx := sort.Search(len(a), func(i int) bool { return a[i] >= x }) return idx } func upperBound(a []int, x int) int { idx := sort.Search(len(a), func(i int) bool { return a[i] > x }) return idx } // UnionFind高速 type UnionFind struct { d []int v []int } func newUnionFind(N int) *UnionFind { u := new(UnionFind) u.d = make([]int, N) u.v = make([]int, N) for i := 0; i < N; i++ { u.d[i] = -1 } return u } func (p *UnionFind) root(x int) int { if p.d[x] < 0 { return x } //p.d[x] = p.root(p.d[x]) return p.root(p.d[x]) } func (p *UnionFind) unite(x, y int) bool { x = p.root(x) y = p.root(y) if x == y { return false } if p.d[x] > p.d[y] { x, y = y, x } p.d[x] += p.d[y] p.d[y] = x p.v[y] -= p.v[x] return true } func (p *UnionFind) same(x, y int) bool { return p.root(x) == p.root(y) } func (p *UnionFind) size(x int) int { return -p.d[p.root(x)] } func (p *UnionFind) add(x, v int) { x = p.root(x) p.v[x] += v } func (p *UnionFind) getvalue(x int) int { if p.d[x] < 0 { return p.v[x] } ret := p.getvalue(p.d[x]) + p.v[x] return ret } func main() { defer wr.Flush() sc.Split(bufio.ScanWords) sc.Buffer([]byte{}, 1000000) // this template is new version. // use getI(), getS(), getInts(), getF() N, Q := getI(), getI() uf := newUnionFind(N + 1) for i := 0; i < Q; i++ { T, a, b := getI(), getI(), getI() switch T { case 1: uf.unite(a, b) case 2: uf.add(a, b) case 3: out(uf.getvalue(a)) } } }