結果
問題 | No.2389 Cheating Code Golf |
ユーザー | 👑 Mizar |
提出日時 | 2023-07-09 17:48:37 |
言語 | Rust (1.77.0) |
結果 |
AC
|
実行時間 | 5 ms / 2,000 ms |
コード長 | 2,663 bytes |
コンパイル時間 | 3,033 ms |
コンパイル使用メモリ | 155,216 KB |
実行使用メモリ | 4,372 KB |
最終ジャッジ日時 | 2023-10-10 01:14:25 |
合計ジャッジ時間 | 4,621 ms |
ジャッジサーバーID (参考情報) |
judge11 / judge13 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 1 ms
4,356 KB |
testcase_01 | AC | 1 ms
4,356 KB |
testcase_02 | AC | 2 ms
4,352 KB |
testcase_03 | AC | 4 ms
4,352 KB |
testcase_04 | AC | 5 ms
4,348 KB |
testcase_05 | AC | 1 ms
4,352 KB |
testcase_06 | AC | 1 ms
4,352 KB |
testcase_07 | AC | 1 ms
4,352 KB |
testcase_08 | AC | 2 ms
4,352 KB |
testcase_09 | AC | 2 ms
4,348 KB |
testcase_10 | AC | 2 ms
4,352 KB |
testcase_11 | AC | 1 ms
4,352 KB |
testcase_12 | AC | 1 ms
4,352 KB |
testcase_13 | AC | 2 ms
4,348 KB |
testcase_14 | AC | 1 ms
4,348 KB |
testcase_15 | AC | 1 ms
4,356 KB |
testcase_16 | AC | 2 ms
4,352 KB |
testcase_17 | AC | 1 ms
4,352 KB |
testcase_18 | AC | 1 ms
4,348 KB |
testcase_19 | AC | 1 ms
4,348 KB |
testcase_20 | AC | 1 ms
4,348 KB |
testcase_21 | AC | 1 ms
4,348 KB |
testcase_22 | AC | 1 ms
4,352 KB |
testcase_23 | AC | 2 ms
4,348 KB |
testcase_24 | AC | 1 ms
4,356 KB |
testcase_25 | AC | 1 ms
4,352 KB |
testcase_26 | AC | 1 ms
4,356 KB |
testcase_27 | AC | 2 ms
4,352 KB |
testcase_28 | AC | 2 ms
4,348 KB |
testcase_29 | AC | 1 ms
4,348 KB |
testcase_30 | AC | 2 ms
4,352 KB |
testcase_31 | AC | 1 ms
4,348 KB |
testcase_32 | AC | 1 ms
4,352 KB |
testcase_33 | AC | 1 ms
4,352 KB |
testcase_34 | AC | 2 ms
4,352 KB |
testcase_35 | AC | 1 ms
4,372 KB |
testcase_36 | AC | 2 ms
4,352 KB |
testcase_37 | AC | 1 ms
4,348 KB |
testcase_38 | AC | 3 ms
4,352 KB |
testcase_39 | AC | 1 ms
4,372 KB |
testcase_40 | AC | 1 ms
4,352 KB |
testcase_41 | AC | 2 ms
4,352 KB |
testcase_42 | AC | 1 ms
4,352 KB |
testcase_43 | AC | 1 ms
4,352 KB |
testcase_44 | AC | 1 ms
4,356 KB |
testcase_45 | AC | 3 ms
4,352 KB |
testcase_46 | AC | 2 ms
4,352 KB |
testcase_47 | AC | 1 ms
4,352 KB |
testcase_48 | AC | 1 ms
4,348 KB |
testcase_49 | AC | 2 ms
4,352 KB |
testcase_50 | AC | 1 ms
4,352 KB |
testcase_51 | AC | 1 ms
4,352 KB |
testcase_52 | AC | 1 ms
4,348 KB |
ソースコード
fn solve(n: usize, m: usize, abp: &Vec<(u32, u32, u32)>) -> f64 { let full_bit = (1usize << n) - 1; let abpp = abp .iter() .map(|&(a, b, p)| { ( 1f64 / (a as f64), 1f64 / (b as f64), 1f64 / (p as f64), 1f64 - 1f64 / (p as f64), ) }) .collect::<Vec<_>>(); let mut dp = [-f64::INFINITY; 4096]; for _ in 0..=m { let mut dpc = dp; dpc[0] = 0f64; for i in 1..=n { let mut bidx = (1 << i) - 1; while bidx <= full_bit { let mut point = 0f64; let mut pit = bidx; while pit > 0 { let pidx = pit.trailing_zeros() as usize; let pbit = pit & pit.wrapping_neg(); let dpidx = bidx ^ pbit; let (af, bf, psucc, pfail) = abpp[pidx]; point .chmax((dpc[dpidx] + af).max((dpc[dpidx] + bf) * psucc + dp[bidx] * pfail)); pit &= pit.wrapping_sub(1); } dpc[bidx].chmax(point); bidx = bidx.next_combination(); } } dp = dpc; } dp[full_bit] } fn main() { let mut stdinlock = std::io::stdin().lock(); let mut lines = std::io::BufRead::lines(&mut stdinlock).map_while(Result::ok); let (n, m) = { let s = lines.next().unwrap(); let mut t = s.split_ascii_whitespace(); ( t.next().unwrap().parse::<usize>().unwrap(), t.next().unwrap().parse::<usize>().unwrap(), ) }; let abp = (0..n) .map(|_| { let s = lines.next().unwrap(); let mut t = s.split_ascii_whitespace(); ( t.next().unwrap().parse::<u32>().unwrap(), t.next().unwrap().parse::<u32>().unwrap(), t.next().unwrap().parse::<u32>().unwrap(), ) }) .collect::<Vec<_>>(); println!("{}", solve(n, m, &abp)); } trait Change { fn chmax(&mut self, x: Self); fn chmin(&mut self, x: Self); } impl<T: PartialOrd> Change for T { fn chmax(&mut self, x: T) { if *self < x { *self = x; } } fn chmin(&mut self, x: T) { if *self > x { *self = x; } } } trait NextCombBits { fn next_combination(self) -> Self; } impl NextCombBits for usize { fn next_combination(self) -> Self { let t = self.wrapping_add(self & self.wrapping_neg()); (((self & !t) >> self.trailing_zeros()) >> 1) | t } }