pub mod scanner { pub struct Scanner { buf: Vec, } impl Scanner { pub fn new() -> Self { Self { buf: vec![] } } pub fn new_from(source: &str) -> Self { let source = String::from(source); let buf = Self::split(source); Self { buf } } pub fn next(&mut self) -> T { loop { if let Some(x) = self.buf.pop() { return x.parse().ok().expect(""); } let mut source = String::new(); std::io::stdin().read_line(&mut source).expect(""); self.buf = Self::split(source); } } fn split(source: String) -> Vec { source .split_whitespace() .rev() .map(String::from) .collect::>() } } } use crate::scanner::Scanner; use std::io::Write; fn main() { let mut scanner = Scanner::new(); let out = std::io::stdout(); let mut out = std::io::BufWriter::new(out.lock()); let t: usize = 1; for _ in 0..t { solve(&mut scanner, &mut out); } } fn dfs(l: usize, r: usize, k: usize, a: &Vec) -> bool { if l + 1 == r { return true; } let m = (r + l) / 2; let mut count = 0; for i in l..m { let j = i + m - l; let vi = (a[i] >> k) & 1; let vj = (a[j] >> k) & 1; if vi != vj { count += 1; } } if count == 0 || count == m - l { return dfs(l, m, k, a) && dfs(m, r, k, a); } else { return false; } } fn solve(scanner: &mut Scanner, out: &mut std::io::BufWriter) { let n: usize = scanner.next(); let mut m = 1usize; for _ in 0..n { m *= 2; } let m = m; let a = (0..m).map(|_| scanner.next::()).collect::>(); let mut ans = a[0] == 0; for k in 0..64 { ans &= dfs(0, m, k, &a); } if ans { writeln!(out, "Yes").unwrap(); } else { writeln!(out, "No").unwrap(); } }