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, ( $($t:tt),* )) => { ($(read_value!($next, $t)),*) }; ($next:expr, [ $t:tt ; $len:expr ]) => { (0..$len).map(|_| read_value!($next, $t)).collect::>() }; ($next:expr, chars) => { read_value!($next, String).chars().collect::>() }; ($next:expr, usize1) => (read_value!($next, usize) - 1); ($next:expr, [ $t:tt ]) => {{ let len = read_value!($next, usize); read_value!($next, [$t; len]) }}; ($next:expr, $t:ty) => ($next().parse::<$t>().expect("Parse error")); } const TIMELIMIT: f64 = 1.935; const DIJ: [(usize, usize); 4] = [(0, !0), (!0, 0), (0, 1), (1, 0)]; const DIR: [char; 4] = ['L', 'U', 'R', 'D']; struct Input { pub h: usize, pub w: usize, pub p: usize, } fn main() { let input = parse_input(); loop { println!("DDDDDDDDDDDDDDDDDDDRRRRRRRRRRRRRRRRRRR"); let feed = { let mut s = String::new(); std::io::stdin().read_line(&mut s).unwrap(); let s = s.trim(); s.parse::().unwrap() }; if feed == -1 { break; } } } fn parse_input() -> Input { input!{ h: usize, w: usize, p: usize, } Input { h, w, p } }