// ---------- begin fenwick tree ---------- pub struct Fenwick { zero: T, a: Box<[T]>, } impl Fenwick where T: Copy + std::ops::Add, { pub fn new(size: usize, zero: T) -> Fenwick { Fenwick { zero: zero, a: vec![zero; size + 1].into_boxed_slice(), } } pub fn init(&mut self) { for a in self.a.iter_mut() { *a = self.zero; } } pub fn add(&mut self, mut x: usize, v: T) { assert!(x > 0); while let Some(a) = self.a.get_mut(x) { *a = *a + v; x += x & (!x + 1); } } pub fn sum(&self, mut x: usize) -> T { assert!(x < self.a.len()); let mut res = self.zero; while x > 0 { res = res + self.a[x]; x -= x & (!x + 1); } res } } // ---------- end fenwick tree ---------- // ---------- begin input macro ---------- // reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 macro_rules! input { (source = $s:expr, $($r:tt)*) => { let mut iter = $s.split_whitespace(); input_inner!{iter, $($r)*} }; ($($r:tt)*) => { let s = { use std::io::Read; let mut s = String::new(); std::io::stdin().read_to_string(&mut s).unwrap(); s }; let mut iter = s.split_whitespace(); input_inner!{iter, $($r)*} }; } macro_rules! input_inner { ($iter:expr) => {}; ($iter:expr, ) => {}; ($iter:expr, $var:ident : $t:tt $($r:tt)*) => { let $var = read_value!($iter, $t); input_inner!{$iter $($r)*} }; } macro_rules! read_value { ($iter:expr, ( $($t:tt),* )) => { ( $(read_value!($iter, $t)),* ) }; ($iter:expr, [ $t:tt ; $len:expr ]) => { (0..$len).map(|_| read_value!($iter, $t)).collect::>() }; ($iter:expr, chars) => { read_value!($iter, String).chars().collect::>() }; ($iter:expr, bytes) => { read_value!($iter, String).bytes().collect::>() }; ($iter:expr, usize1) => { read_value!($iter, usize) - 1 }; ($iter:expr, $t:ty) => { $iter.next().unwrap().parse::<$t>().expect("Parse error") }; } // ---------- end input macro ---------- use std::io::Write; fn run() { input! { n: usize, q: usize, a: [i64; n], ask: [(u8, usize, usize); q], } let out = std::io::stdout(); let mut out = std::io::BufWriter::new(out.lock()); let mut a = a; a.push(0); for i in (0..n).rev() { a[i] += a[i + 1]; } let mut bit = Fenwick::new(n + 1, 0); for (op, l, r) in ask { if op == 1 { bit.add(l, r - l); } else { let l = l + bit.sum(l - 1); let r = r + bit.sum(r); let ans = a[l - 1] - a[r]; writeln!(out, "{}", ans).ok(); } } } fn main() { run(); }