#[allow(unused_imports)] use std::cmp::*; #[allow(unused_imports)] use std::collections::*; use std::io::Read; #[allow(dead_code)] fn getline() -> String { let mut ret = String::new(); std::io::stdin().read_line(&mut ret).ok().unwrap(); ret } fn get_word() -> String { let stdin = std::io::stdin(); let mut stdin=stdin.lock(); let mut u8b: [u8; 1] = [0]; loop { let mut buf: Vec = Vec::with_capacity(16); loop { let res = stdin.read(&mut u8b); if res.unwrap_or(0) == 0 || u8b[0] <= b' ' { break; } else { buf.push(u8b[0]); } } if buf.len() >= 1 { let ret = String::from_utf8(buf).unwrap(); return ret; } } } #[allow(dead_code)] fn get() -> T { get_word().parse().ok().unwrap() } fn ask(i: usize, j: usize) -> Option { println!("1 {} {}", i + 1, j + 1); let x: i32 = get(); if x == -1 { None } else { Some(x as usize - 1) } } fn main() { let n: usize = get(); let mut to = vec![None; n]; let mut g = vec![vec![]; n]; for i in 0..n { to[i] = ask(i, i); if let Some(v) = to[i] { g[v].push(i); } } const INF: i32 = 1 << 28; let mut dist = vec![INF; n]; let mut que = VecDeque::new(); for i in 0..n { if to[i].is_none() { que.push_back((0, i)); } } while let Some((d, v)) = que.pop_front() { if dist[v] <= d { continue; } dist[v] = d; for &w in &g[v] { que.push_back((d + 1, w)); } } let mut ma = (0, 0); for i in 0..n { if dist[i] < INF { ma = max(ma, (dist[i], i)); } } let one = ma.1; let two = to[one].unwrap(); let mut ans = vec![0; n]; ans[one] = 1; ans[two] = 2; let mut cur = two; for i in 2..n { let x = ask(one, cur).unwrap(); cur = x; ans[x] = i + 1; } print!("2"); for i in 0..n { print!(" {}", ans[i]); } println!(); }