// ---------- 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; use std::collections::*; type Map = BTreeMap; type Set = BTreeSet; type Deque = VecDeque; fn run() { input! { n: usize, a: [u32; n], b: [u32; n], } let mut a = a; let mut b = b; let mut ans = vec![]; let x = (0..n).min_by_key(|&x| a[x].leading_zeros()).unwrap(); let y = (0..n).min_by_key(|&x| b[x].leading_zeros()).unwrap(); if x > y { ans.push((1, x, y)); a[x] ^= b[y]; } for i in 0..n { if b[i].leading_zeros() > a[x].leading_zeros() { ans.push((2, x, i)); b[i] ^= a[x]; } } for i in 0..n { if a[i].leading_zeros() == b[0].leading_zeros() { ans.push((1, i, 0)); a[i] ^= b[0]; } } assert!(a.iter().max().unwrap() < b.iter().min().unwrap()); println!("{}", ans.len()); for (op, a, b) in ans { println!("{} {} {}", op, a + 1, b + 1); } } fn main() { run(); }