結果
問題 | No.2329 Nafmo、イカサマをする |
ユーザー | haihamabossu |
提出日時 | 2023-05-28 16:13:19 |
言語 | Rust (1.83.0 + proconio) |
結果 |
AC
|
実行時間 | 114 ms / 2,000 ms |
コード長 | 3,205 bytes |
コンパイル時間 | 16,359 ms |
コンパイル使用メモリ | 379,692 KB |
実行使用メモリ | 12,672 KB |
最終ジャッジ日時 | 2024-12-27 10:57:37 |
合計ジャッジ時間 | 15,625 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 40 |
ソースコード
pub mod lower_bound { pub fn lower_bound<T: Ord>(list: &[T], val: &T) -> usize { let mut l = 0; let mut r = list.len(); while l < r { let x = (l + r) / 2; match list[x].cmp(val) { std::cmp::Ordering::Less => { l = x + 1; } std::cmp::Ordering::Equal | std::cmp::Ordering::Greater => { r = x; } } } l } pub fn upper_bound<T: Ord>(list: &[T], val: &T) -> usize { let mut l = 0; let mut r = list.len(); while l < r { let x = (l + r) / 2; match list[x].cmp(val) { std::cmp::Ordering::Less | std::cmp::Ordering::Equal => { l = x + 1; } std::cmp::Ordering::Greater => { r = x; } } } l } } pub mod scanner { pub struct Scanner { buf: Vec<String>, } 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<T: std::str::FromStr>(&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<String> { source .split_whitespace() .rev() .map(String::from) .collect::<Vec<_>>() } } } use crate::{lower_bound::upper_bound, scanner::Scanner}; fn main() { let mut scanner = Scanner::new(); let t: usize = 1; for _ in 0..t { solve(&mut scanner); } } fn solve(scanner: &mut Scanner) { let n: usize = scanner.next(); let m: usize = scanner.next(); let k: usize = scanner.next(); let mut a = vec![0; n]; for i in 0..n { let x = scanner.next::<usize>(); a[i] = x; } if n == 0 || m == 0 { println!("0"); return; } let mut b = vec![vec![]; 4]; for i in 0..n { b[1].push(a[i]); for j in 0..n { b[2].push(a[i] + a[j]); for k in 0..n { b[3].push(a[i] + a[j] + a[k]); } } } for i in 0..4 { b[i].push(0); b[i].sort(); } let mut ans = 0; for ki in 1..=k { let mut bi = 0; let mut bj = ki; if bj > 3 { bi = bj - 3; bj = 3; } for &x in b[bi].iter() { if m < x { break; } let i = upper_bound(&b[bj], &(m - x)) - 1; let y = b[bj][i]; if x + y <= m { ans = ans.max(x + y); } } } println!("{}", ans); }