結果
問題 | No.270 next_permutation (1) |
ユーザー | koba-e964 |
提出日時 | 2017-01-11 13:55:55 |
言語 | Rust (1.77.0 + proconio) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,774 bytes |
コンパイル時間 | 12,923 ms |
コンパイル使用メモリ | 377,744 KB |
実行使用メモリ | 18,176 KB |
最終ジャッジ日時 | 2024-06-01 06:07:51 |
合計ジャッジ時間 | 14,583 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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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
5,248 KB |
testcase_01 | AC | 3 ms
5,248 KB |
testcase_02 | AC | 5 ms
5,376 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 4 ms
5,376 KB |
testcase_05 | AC | 4 ms
5,376 KB |
testcase_06 | AC | 4 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 10 ms
5,376 KB |
testcase_10 | AC | 66 ms
15,872 KB |
testcase_11 | AC | 68 ms
18,176 KB |
testcase_12 | AC | 68 ms
18,048 KB |
testcase_13 | AC | 64 ms
14,592 KB |
testcase_14 | WA | - |
ソースコード
#[allow(unused_imports)] use std::cmp::*; #[allow(unused_imports)] use std::collections::*; use std::io::*; #[allow(dead_code)] fn getline() -> String { let mut ret = String::new(); std::io::stdin().read_line(&mut ret).ok(); return ret; } fn get_word() -> String { let mut stdin = std::io::stdin(); let mut u8b: [u8; 1] = [0]; loop { let mut buf: Vec<u8> = Vec::with_capacity(16); loop { let res = stdin.read(&mut u8b); if res.is_err() || res.ok().unwrap() == 0 || u8b[0] <= ' ' as u8 { break; } else { buf.push(u8b[0]); } } if buf.len() >= 1 { let ret = std::string::String::from_utf8(buf).unwrap(); return ret; } } } fn parse<T: std::str::FromStr>(s: &str) -> T { s.parse::<T>().ok().unwrap() } #[allow(dead_code)] fn get<T: std::str::FromStr>() -> T { parse(&get_word()) } // Returns the least index of elements that are modified, wrapped with Some. // If the entire array is reversed, it returns None instead. // v's elements must be pairwise distinct. fn next_permutation<T: Ord>(v: &mut [T]) -> Option<usize> { let mut tail_dec: usize = 1; let n = v.len(); while tail_dec < n { if v[n - tail_dec - 1] > v[n - tail_dec] { tail_dec += 1; } else { break; } } // v[n - tail_dec .. n] is strictly decreasing if tail_dec < n { let x = n - tail_dec - 1; let mut y = n; { let pivot = &v[x]; for i in (n - tail_dec .. n).rev() { if v[i] > *pivot { y = i; break; } } assert!(y < n); } v.swap(x, y); } v[n - tail_dec .. n].reverse(); if tail_dec < n { Some(n - tail_dec - 1) } else { None } } fn main() { let n: usize = get(); let k: usize = get(); let mut p: Vec<i64> = (0 .. n).map(|_| get()).collect(); let b: Vec<i64> = (0 .. n).map(|_| get()).collect(); let mut mods: Vec<Vec<(i64, usize)>> = vec![Vec::new(); n]; for i in 0 .. n { mods[i].push((p[i], 0)); } let mut tot: u64 = 0; for stage in 0 .. k { let ret = match next_permutation(&mut p) { Some(idx) => idx, None => 0, }; for i in ret .. n { mods[i].push((p[i], stage)); } } for i in 0 .. n { mods[i].push((0x3141592653589793, k)); } for i in 0 .. n { let m = &mods[i]; for j in 0 .. m.len() - 1 { tot += (b[i] - m[j].0).abs() as u64 * ((m[j + 1].1 - m[j].1) as u64); } } println!("{}", tot); }