// https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 macro_rules! input { ($($r:tt)*) => { let stdin = std::io::stdin(); let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock())); let mut next = move || -> String{ bytes.by_ref().map(|r|r.unwrap() as char) .skip_while(|c|c.is_whitespace()) .take_while(|c|!c.is_whitespace()) .collect() }; input_inner!{next, $($r)*} }; } macro_rules! input_inner { ($next:expr) => {}; ($next:expr,) => {}; ($next:expr, $var:ident : $t:tt $($r:tt)*) => { let $var = read_value!($next, $t); input_inner!{$next $($r)*} }; } macro_rules! read_value { ($next:expr, chars) => { read_value!($next, String).chars().collect::>() }; ($next:expr, $t:ty) => ($next().parse::<$t>().expect("Parse error")); } fn main() { input!(s: chars); let mut c = 0; let n = s.len(); let mut sing = false; for i in (0..n).rev() { c += (s[i] as u8 - b'0') as i32; match c { 6 | 7 if i + 1 != n => { c = 0; sing = true; } 2 | 3 | 4 if !sing => c = -1, 0 if i == 0 => {} _ => { println!("No"); return; } } } println!("{}", if c == 0 { "Yes" } else { "No" }); }