// ---------- begin chmin, chmax ---------- pub trait ChangeMinMax { fn chmin(&mut self, x: Self) -> bool; fn chmax(&mut self, x: Self) -> bool; } impl ChangeMinMax for T { fn chmin(&mut self, x: Self) -> bool { *self > x && { *self = x; true } } fn chmax(&mut self, x: Self) -> bool { *self < x && { *self = x; true } } } // ---------- end chmin, chmax ---------- // ---------- 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; fn run() { input! { n: usize, m: usize, a: [i64; n], } let inf = std::i64::MAX / 10; let mut dp = vec![]; dp.push(vec![vec![-inf; n + 1]; m + 1]); dp.push(vec![vec![inf; n + 1]; m + 1]); dp[0][0][n] = 0; dp[1][0][n] = 0; for c in 0..=m { for l in (0..=n).rev() { let v = [dp[0][c][l], dp[1][c][l]]; for &v in v.iter() { if c + 1 <= m { dp[0][c + 1][l].chmax(-v); dp[1][c + 1][l].chmin(-v); } if l > 0 { dp[0][c][l - 1].chmax(v + a[l - 1]); dp[1][c][l - 1].chmin(v + a[l - 1]); } } } } let mut ans = vec![]; let mut state = 0; let mut x = m; let mut y = 0; while x > 0 || y < n { if x > 0 && dp[state][x][y] == -dp[state ^ 1][x - 1][y] { ans.push(y); x -= 1; state ^= 1; } else { y += 1; } } for t in ans { println!("{}", t); } } fn main() { run(); }