#[doc = " https://github.com/hatoo/competitive-rust-snippets"] #[allow(unused_imports)] use std::cmp::{max, min, Ordering}; #[allow(unused_imports)] use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, VecDeque}; #[allow(unused_imports)] use std::io::{stdin, stdout, BufWriter, Write}; #[allow(unused_imports)] use std::iter::FromIterator; #[allow(unused_macros)] macro_rules ! debug { ( $ ( $ a : expr ) ,* ) => { eprintln ! ( concat ! ( $ ( stringify ! ( $ a ) , " = {:?}, " ) ,* ) , $ ( $ a ) ,* ) ; } } #[macro_export] macro_rules ! input { ( source = $ s : expr , $ ( $ r : tt ) * ) => { let mut parser = Parser :: from_str ( $ s ) ; input_inner ! { parser , $ ( $ r ) * } } ; ( parser = $ parser : ident , $ ( $ r : tt ) * ) => { input_inner ! { $ parser , $ ( $ r ) * } } ; ( new_stdin_parser = $ parser : ident , $ ( $ r : tt ) * ) => { let stdin = std :: io :: stdin ( ) ; let reader = std :: io :: BufReader :: new ( stdin . lock ( ) ) ; let mut $ parser = Parser :: new ( reader ) ; input_inner ! { $ parser , $ ( $ r ) * } } ; ( $ ( $ r : tt ) * ) => { input ! { new_stdin_parser = parser , $ ( $ r ) * } } ; } #[macro_export] macro_rules ! input_inner { ( $ parser : ident ) => { } ; ( $ parser : ident , ) => { } ; ( $ parser : ident , $ var : ident : $ t : tt $ ( $ r : tt ) * ) => { let $ var = read_value ! ( $ parser , $ t ) ; input_inner ! { $ parser $ ( $ r ) * } } ; } #[macro_export] macro_rules ! read_value { ( $ parser : ident , ( $ ( $ t : tt ) ,* ) ) => { ( $ ( read_value ! ( $ parser , $ t ) ) ,* ) } ; ( $ parser : ident , [ $ t : tt ; $ len : expr ] ) => { ( 0 ..$ len ) . map ( | _ | read_value ! ( $ parser , $ t ) ) . collect ::< Vec < _ >> ( ) } ; ( $ parser : ident , chars ) => { read_value ! ( $ parser , String ) . chars ( ) . collect ::< Vec < char >> ( ) } ; ( $ parser : ident , usize1 ) => { read_value ! ( $ parser , usize ) - 1 } ; ( $ parser : ident , $ t : ty ) => { $ parser . next ::<$ t > ( ) . expect ( "Parse error" ) } ; } use std::io; use std::io::BufRead; use std::str; pub struct Parser { reader: R, buf: Vec, pos: usize, } impl Parser { pub fn from_str(s: &str) -> Parser { Parser { reader: io::empty(), buf: s.as_bytes().to_vec(), pos: 0, } } } impl Parser { pub fn new(reader: R) -> Parser { Parser { reader: reader, buf: vec![], pos: 0, } } pub fn update_buf(&mut self) { self.buf.clear(); self.pos = 0; loop { let (len, complete) = { let buf2 = self.reader.fill_buf().unwrap(); self.buf.extend_from_slice(buf2); let len = buf2.len(); if len == 0 { break; } (len, buf2[len - 1] <= 0x20) }; self.reader.consume(len); if complete { break; } } } pub fn next(&mut self) -> Result { loop { let mut begin = self.pos; while begin < self.buf.len() && (self.buf[begin] <= 0x20) { begin += 1; } let mut end = begin; while end < self.buf.len() && (self.buf[end] > 0x20) { end += 1; } if begin != self.buf.len() { self.pos = end; return str::from_utf8(&self.buf[begin..end]).unwrap().parse::(); } else { self.update_buf(); } } } } #[allow(unused_macros)] macro_rules ! debug { ( $ ( $ a : expr ) ,* ) => { eprintln ! ( concat ! ( $ ( stringify ! ( $ a ) , " = {:?}, " ) ,* ) , $ ( $ a ) ,* ) ; } } #[doc = " https://github.com/hatoo/competitive-rust-snippets"] const BIG_STACK_SIZE: bool = true; #[allow(dead_code)] fn main() { use std::thread; if BIG_STACK_SIZE { thread::Builder::new() .stack_size(32 * 1024 * 1024) .name("solve".into()) .spawn(solve) .unwrap() .join() .unwrap(); } else { solve(); } } fn solve() { input!{ N:usize,Q:usize, a:[usize;N], q:[(usize,usize,usize);Q], } let mut seg: SEG = SEG::new(N); let mut ind = vec![0;N+1]; for i in 0..N { seg.update(i, a[i]); ind[a[i]]=i; } for (t,l,r) in q { let l=l-1; let r=r-1; // dbg!((l,r)); if t==1 { let al=seg.query(l,l+1); let ar=seg.query(r,r+1); // dbg!((al,ar)); seg.update(l, ar); seg.update(r, al); ind[ar]=l; ind[al]=r; } else if t==2 { let minv=seg.query(l,r+1); println!("{}",ind[minv]+1); } } } #[allow(dead_code)] pub trait Monoid { type T: Clone; fn id() -> Self::T; fn op(a: &Self::T, b: &Self::T) -> Self::T; } #[allow(dead_code)] pub struct SEG { n: usize, buf: Vec, } impl SEG { #[allow(dead_code)] pub fn new(n: usize) -> SEG { let mut m = 1; while m < n { m *= 2; } SEG { n: m, buf: vec![M::id().clone(); 2 * m - 1], } } #[allow(dead_code)] pub fn update(&mut self, k: usize, a: M::T) { let mut k = k + self.n - 1; self.buf[k] = a; while k > 0 { k = (k - 1) / 2; self.buf[k] = M::op(&self.buf[k * 2 + 1], &self.buf[k * 2 + 2]); } } #[allow(dead_code)] pub fn get(&self, k: usize) -> M::T { self.buf[k + self.n].clone() } pub fn do_query(&self, a: usize, b: usize, k: usize, l: usize, r: usize) -> M::T { if r <= a || b <= l { return M::id(); } if a <= l && r <= b { return self.buf[k].clone(); } else { let vl = self.do_query(a, b, k * 2 + 1, l, (l + r) / 2); let vr = self.do_query(a, b, k * 2 + 2, (l + r) / 2, r); return M::op(&vl, &vr); } } #[allow(dead_code)] pub fn query(&self, a: usize, b: usize) -> M::T { self.do_query(a, b, 0, 0, self.n) } } struct MIN; impl Monoid for MIN { type T = usize; fn id() -> Self::T { (1 << 31) - 1 } fn op(a: &Self::T, b: &Self::T) -> Self::T { std::cmp::min(*a, *b) } }