package main import ( "bufio" "fmt" "os" "sort" "strconv" ) type rangeAddSegmentTree struct { size int offset int data []int } func newRangeAddSegmentTree(n int) rangeAddSegmentTree { var result rangeAddSegmentTree result.size = n t := 1 for t < n { t *= 2 } result.offset = t - 1 result.data = make([]int, 2*t-1) return result } func (st rangeAddSegmentTree) rangeAdd(start, stop, value int) { l := start + st.offset r := stop + st.offset for l < r { if l&1 == 0 { st.data[l] += value } if r&1 == 0 { st.data[r-1] += value } l /= 2 r = (r - 1) / 2 } } func (st rangeAddSegmentTree) get(index int) int { i := index + st.offset result := st.data[i] for i > 0 { i = (i - 1) / 2 result += st.data[i] } return result } func (st rangeAddSegmentTree) set(index, value int) { st.rangeAdd(index, index+1, value-st.get(index)) } func (st rangeAddSegmentTree) bisectLeft(value int) int { return sort.Search(st.size, func(i int) bool { return st.get(i) >= value }) } func main() { defer flush() N := readInt() Q := readInt() A := make([]int, N) for i := 0; i < N; i++ { A[i] = readInt() if i != 0 { A[i] += A[i-1] } } st := newRangeAddSegmentTree(N + 1) for i := 0; i < N+1; i++ { st.rangeAdd(i, i+1, i) } for i := 0; i < Q; i++ { T := readInt() l := readInt() - 1 r := readInt() - 1 x := st.bisectLeft(l) y := st.bisectLeft(r+1) - 1 if T == 1 { j := st.bisectLeft(r + 1) for k := j; k < y+1; k++ { st.set(k, st.get(x)) } st.rangeAdd(y+1, N+1, l-r) } else if T == 2 { if x != 0 { println(A[y] - A[x-1]) } else { println(A[y]) } } } } const ( ioBufferSize = 1 * 1024 * 1024 // 1 MB ) var stdinScanner = func() *bufio.Scanner { result := bufio.NewScanner(os.Stdin) result.Buffer(make([]byte, ioBufferSize), ioBufferSize) result.Split(bufio.ScanWords) return result }() func readString() string { stdinScanner.Scan() return stdinScanner.Text() } func readInt() int { result, err := strconv.Atoi(readString()) if err != nil { panic(err) } return result } var stdoutWriter = bufio.NewWriter(os.Stdout) func flush() { stdoutWriter.Flush() } func println(args ...interface{}) (int, error) { return fmt.Fprintln(stdoutWriter, args...) }