#![allow(non_snake_case, unused_imports, unused_must_use)] use std::io::{self, prelude::*}; use std::str; fn main() { let (stdin, stdout) = (io::stdin(), io::stdout()); let mut scan = Scanner::new(stdin.lock()); let mut out = io::BufWriter::new(stdout.lock()); macro_rules! input { ($T: ty) => { scan.token::<$T>() }; ($T: ty, $N: expr) => { (0..$N).map(|_| scan.token::<$T>()).collect::>() }; } let N = input!(usize); let A = input!(usize, N); let mut dp = [(false, 0); 1 << 14]; dp[A[0]] = (true, 1); for i in 1..N { let mut dpn = dp.clone(); for s in 0..dp.len() { if dp[s].0 { let prev = dp[s ^ A[i]].1; if dpn[s ^ A[i]].0 && prev > dp[s].1 + 1 { dpn[s ^ A[i]] = (true, dp[s].1 + 1); } else { dpn[s ^ A[i]] = (true, dp[s].1 + 1); } } } dp = dpn; if dp[0].0 && dp[0].1 != N { writeln!(out, "Yes"); return; } } writeln!(out, "No"); } struct Scanner { reader: R, buf_str: Vec, buf_iter: str::SplitWhitespace<'static>, } impl Scanner { fn new(reader: R) -> Self { Self { reader, buf_str: vec![], buf_iter: "".split_whitespace(), } } fn token(&mut self) -> T { loop { if let Some(token) = self.buf_iter.next() { return token.parse().ok().expect("Failed parse"); } self.buf_str.clear(); self.reader .read_until(b'\n', &mut self.buf_str) .expect("Failed read"); self.buf_iter = unsafe { let slice = str::from_utf8_unchecked(&self.buf_str); std::mem::transmute(slice.split_whitespace()) } } } }