結果

問題 No.589 Counting Even
ユーザー aimyaimy
提出日時 2017-11-04 00:07:30
言語 Rust
(1.77.0 + proconio)
結果
WA  
実行時間 -
コード長 3,333 bytes
コンパイル時間 13,045 ms
コンパイル使用メモリ 377,924 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-05-02 20:55:25
合計ジャッジ時間 12,489 ms
ジャッジサーバーID
(参考情報)
judge3 / judge5
このコードへのチャレンジ
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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 1 ms
5,248 KB
testcase_02 AC 0 ms
5,376 KB
testcase_03 AC 1 ms
5,376 KB
testcase_04 WA -
testcase_05 WA -
testcase_06 WA -
testcase_07 WA -
testcase_08 WA -
testcase_09 WA -
testcase_10 WA -
testcase_11 WA -
testcase_12 WA -
testcase_13 WA -
testcase_14 WA -
testcase_15 WA -
testcase_16 WA -
testcase_17 WA -
testcase_18 WA -
testcase_19 WA -
testcase_20 WA -
testcase_21 WA -
testcase_22 AC 0 ms
5,376 KB
testcase_23 AC 1 ms
5,376 KB
testcase_24 WA -
testcase_25 WA -
testcase_26 AC 0 ms
5,376 KB
testcase_27 WA -
testcase_28 AC 1 ms
5,376 KB
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ソースコード

diff #

fn main() {
  let n: u64 = get::val();
  
  if n%2 == 1 || n == 0 {println!("0"); return}

  let t = n.count_ones();
  let ans = n - (t as u64) * 2 + 1;
  println!("{}", ans)
}

#[allow(dead_code)]
mod prime {
  pub fn is_prime(n: usize) -> bool {
    let sq = (n as f64).sqrt().floor() as usize;
    let p = (2..sq+1).all(|d| n%d != 0);
    p
  }

  pub fn primes(n: usize) -> Vec<usize> {
    if n < 2 {return vec![]}
    let mut ps = vec![true; n+1];
    ps[0] = false;
    ps[1] = false;
    for i in 2 .. n+1 {
      if ps[i] {
        for k in 2 .. n/i+1 {
          ps[i*k] = false;
        }
      }
    }
    ps.iter().enumerate().filter(|&(_,&p)|p).map(|(i,_)|i).collect()
  }

  pub fn factorize(n: u64) -> Vec<u64> {
    let sq = (n as f64).sqrt().floor() as u64;
    let mut fs = vec![];
    let mut x = n;
    for d in 2 .. sq+1 {
      if x == 1  {break}
      while x > 1 && x % d == 0 {
        fs.push(d);
        x /= d;
      }
    }
    if x != 1 {fs.push(x)};
    fs
  }
}

#[allow(dead_code)]
mod modulo {
  pub const MOD: u64 = 1_000_000_007;

  pub fn plus(x: u64, y: u64) -> u64 {
    (x + y) % MOD
  }

  pub fn mul(x: u64, y: u64) -> u64 {
    (x * y) % MOD
  }

  pub fn pow(x: u64, n: u64) -> u64 {
    match n {
      0 => 1,
      _ if n % 2 == 1 => mul(x, pow(x, n-1)),
      _ => {
        let q = pow(x, n>>1);
        mul(q, q)
      }
    }
  }
}

#[allow(dead_code)]
mod get {
  use std::io::*;
  use std::str::*;

  pub fn val<T: FromStr>() -> T {
    let mut buf = String::new();
    stdin().read_line(&mut buf).ok();
    buf.trim().parse::<T>().ok().unwrap()
  }

  pub fn vals<T: FromStr>(n: usize) -> Vec<T> {
    let mut vec: Vec<T> = vec![];
    for _ in 0 .. n {
      vec.push(val());
    }
    vec
  }

  pub fn tuple<T1: FromStr, T2: FromStr>() -> (T1, T2) {
    let mut buf = String::new();
    stdin().read_line(&mut buf).ok();
    let mut it = buf.trim().split_whitespace();
    let x = it.next().unwrap().parse::<T1>().ok().unwrap();
    let y = it.next().unwrap().parse::<T2>().ok().unwrap();
    (x, y)
  }

  pub fn tuples<T1: FromStr, T2: FromStr>(n: usize) -> Vec<(T1, T2)> {
    let mut vec: Vec<(T1, T2)> = vec![];
    for _ in 0 .. n {
      vec.push(tuple());
    }
    vec
  }

  pub fn tuple3<T1: FromStr, T2: FromStr, T3: FromStr>() -> (T1, T2, T3) {
    let mut buf = String::new();
    stdin().read_line(&mut buf).ok();
    let mut it = buf.trim().split_whitespace();
    let x = it.next().unwrap().parse::<T1>().ok().unwrap();
    let y = it.next().unwrap().parse::<T2>().ok().unwrap();
    let z = it.next().unwrap().parse::<T3>().ok().unwrap();
    (x, y, z)
  }

  pub fn tuple3s<T1: FromStr, T2: FromStr, T3: FromStr>(n: usize) -> Vec<(T1, T2, T3)> {
    let mut vec: Vec<(T1, T2, T3)> = vec![];
    for _ in 0 .. n {
      vec.push(tuple3());
    }
    vec
  }

  pub fn list<T: FromStr>() -> Vec<T> {
    let mut buf = String::new();
    stdin().read_line(&mut buf).ok();
    buf.trim().split_whitespace().map(|t| t.parse::<T>().ok().unwrap()).collect()
  }

  pub fn lists<T: FromStr>(h: usize) -> Vec<Vec<T>> {
    let mut mat: Vec<Vec<T>> = vec![];
    for _ in 0 .. h {
      mat.push(list());
    }
    mat
  }

  pub fn chars() -> Vec<char> {
    let mut buf = String::new();
    stdin().read_line(&mut buf).ok();
    buf.trim().chars().collect()
  }
}
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