#621913 (Rust) No.737 PopCount

提出ソース

結果

問題	No.737 PopCount
ユーザー	nebocco
提出日時	2021-02-24 20:13:43
言語	Rust (1.77.0 + proconio)
結果	AC
実行時間	1 ms / 1,000 ms
コード長	5,883 bytes
コンパイル時間	13,793 ms
コンパイル使用メモリ	399,880 KB
実行使用メモリ	6,944 KB
最終ジャッジ日時	2024-09-24 20:24:39
合計ジャッジ時間	13,899 ms
ジャッジサーバーID （参考情報）	judge4 / judge1

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 6,812 KB
testcase_01	AC	1 ms 6,812 KB
testcase_02	AC	1 ms 6,940 KB
testcase_03	AC	1 ms 6,940 KB
testcase_04	AC	1 ms 6,944 KB
testcase_05	AC	1 ms 6,944 KB
testcase_06	AC	1 ms 6,940 KB
testcase_07	AC	1 ms 6,944 KB
testcase_08	AC	1 ms 6,940 KB
testcase_09	AC	1 ms 6,944 KB
testcase_10	AC	1 ms 6,940 KB
testcase_11	AC	1 ms 6,940 KB
testcase_12	AC	1 ms 6,944 KB
testcase_13	AC	1 ms 6,940 KB
testcase_14	AC	1 ms 6,940 KB
testcase_15	AC	1 ms 6,940 KB
testcase_16	AC	1 ms 6,940 KB
testcase_17	AC	1 ms 6,944 KB

権限があれば一括ダウンロードができます

コンパイルメッセージ

warning: unnecessary trailing semicolon
 --> src/main.rs:6:33
  |
6 |     const MOD: i64 = 1_000_000_007;;
  |                                    ^ help: remove this semicolon
  |
  = note: `#[warn(redundant_semicolons)]` on by default

warning: unnecessary parentheses around `for` iterator expression
  --> src/main.rs:14:12
   |
14 |         for j in (0..60) {
   |                  ^     ^
   |
   = note: `#[warn(unused_parens)]` on by default
help: remove these parentheses
   |
14 -         for j in (0..60) {
14 +         for j in 0..60 {
   |

ソースコード

raw source code

fn main() {
	let mut io = IO::new();
    input!{ from io,
		n: i64
    }
	const MOD: i64 = 1_000_000_007;;
	let mut prvs = vec![vec![0; 2]; 61];
	let mut prvn = vec![vec![0; 2]; 61];
	let mut nxts = vec![vec![0; 2]; 61];
	let mut nxtn = vec![vec![0; 2]; 61];
	prvn[0][0] = 1;
	for i in (0..60).rev() {
		let b = (n >> i) & 1 == 1;
		for j in (0..60) {
			if b {
				nxtn[j][1] += prvn[j][0];
				nxtn[j+1][0] += prvn[j][0];
				nxtn[j][1] += prvn[j][1];
				nxtn[j+1][1] += prvn[j][1];

				nxts[j][1] += prvs[j][0] * 2;
				nxts[j+1][0] += prvs[j][0] * 2 + prvn[j][0];
				nxts[j][1] += prvs[j][1] * 2;
				nxts[j+1][1] += prvs[j][1] * 2 + prvn[j][1];
			} else {
				nxtn[j][0] += prvn[j][0];
				nxtn[j][1] += prvn[j][1];
				nxtn[j+1][1] += prvn[j][1];

				nxts[j][0] += prvs[j][0] * 2;
				nxts[j][1] += prvs[j][1] * 2;
				nxts[j+1][1] += prvs[j][1] * 2 + prvn[j][1];
			}
			prvn[j][0] = 0;
			prvn[j][1] = 0;
			prvs[j][0] = 0;
			prvs[j][1] = 0;

			nxtn[j][0] %= MOD;
			nxtn[j][1] %= MOD;
			nxts[j][0] %= MOD;
			nxts[j][1] %= MOD;
		}
		prvn[60][0] = 0;
		prvn[60][1] = 0;
		prvs[60][0] = 0;
		prvs[60][1] = 0;
		std::mem::swap(&mut prvn, &mut nxtn);
		std::mem::swap(&mut prvs, &mut nxts);
	}
	let mut ans = 0;
	for i in 0..60 {
		ans += (prvs[i][0] + prvs[i][1]) * i as i64 % MOD;
	}
    io.println(ans % MOD);
}

// ------------ io module start ------------
use std::io::{stdout, BufWriter, Read, StdoutLock, Write};

pub struct IO {
	iter: std::str::SplitAsciiWhitespace<'static>,
	buf: BufWriter<StdoutLock<'static>>,
}

impl IO {
	pub fn new() -> Self {
		let mut input = String::new();
		std::io::stdin().read_to_string(&mut input).unwrap();
		let input = Box::leak(input.into_boxed_str());
		let out = Box::new(stdout());
		IO {
			iter: input.split_ascii_whitespace(),
			buf: BufWriter::new(Box::leak(out).lock()),
		}
	}
	fn scan_str(&mut self) -> &'static str {
		self.iter.next().unwrap()
	}
	pub fn scan<T: Scan>(&mut self) -> <T as Scan>::Output {
		<T as Scan>::scan(self)
	}
	pub fn scan_vec<T: Scan>(&mut self, n: usize) -> Vec<<T as Scan>::Output> {
		(0..n).map(|_| self.scan::<T>()).collect()
	}
	pub fn print<T: Print>(&mut self, x: T) {
		<T as Print>::print(self, x);
	}
	pub fn println<T: Print>(&mut self, x: T) {
		self.print(x);
		self.print("\n");
	}
	pub fn iterln<T: Print, I: Iterator<Item = T>>(&mut self, mut iter: I, delim: &str) {
		if let Some(v) = iter.next() {
			self.print(v);
			for v in iter {
				self.print(delim);
				self.print(v);
			}
		}
		self.print("\n");
	}
	pub fn flush(&mut self) {
		self.buf.flush().unwrap();
	}
}

impl Default for IO {
	fn default() -> Self {
		Self::new()
	}
}

pub trait Scan {
	type Output;
	fn scan(io: &mut IO) -> Self::Output;
}

macro_rules! impl_scan {
	($($t:tt),*) => {
		$(
			impl Scan for $t {
				type Output = Self;
				fn scan(s: &mut IO) -> Self::Output {
					s.scan_str().parse().unwrap()
				}
			}
		)*
	};
}

impl_scan!(i16, i32, i64, isize, u16, u32, u64, usize, String);

pub enum Bytes {}
impl Scan for Bytes {
	type Output = &'static [u8];
	fn scan(s: &mut IO) -> Self::Output {
		s.scan_str().as_bytes()
	}
}

pub enum Chars {}
impl Scan for Chars {
	type Output = Vec<char>;
	fn scan(s: &mut IO) -> Self::Output {
		s.scan_str().chars().collect()
	}
}

pub enum Usize1 {}
impl Scan for Usize1 {
	type Output = usize;
	fn scan(s: &mut IO) -> Self::Output {
		s.scan::<usize>().wrapping_sub(1)
	}
}

impl<T: Scan, U: Scan> Scan for (T, U) {
	type Output = (T::Output, U::Output);
	fn scan(s: &mut IO) -> Self::Output {
		(T::scan(s), U::scan(s))
	}
}

impl<T: Scan, U: Scan, V: Scan> Scan for (T, U, V) {
	type Output = (T::Output, U::Output, V::Output);
	fn scan(s: &mut IO) -> Self::Output {
		(T::scan(s), U::scan(s), V::scan(s))
	}
}

impl<T: Scan, U: Scan, V: Scan, W: Scan> Scan for (T, U, V, W) {
	type Output = (T::Output, U::Output, V::Output, W::Output);
	fn scan(s: &mut IO) -> Self::Output {
		(T::scan(s), U::scan(s), V::scan(s), W::scan(s))
	}
}

pub trait Print {
	fn print(w: &mut IO, x: Self);
}

macro_rules! impl_print_int {
	($($t:ty),*) => {
		$(
			impl Print for $t {
				fn print(w: &mut IO, x: Self) {
					w.buf.write_all(x.to_string().as_bytes()).unwrap();
				}
			}
		)*
	};
}

impl_print_int!(i16, i32, i64, isize, u16, u32, u64, usize);

impl Print for u8 {
	fn print(w: &mut IO, x: Self) {
		w.buf.write_all(&[x]).unwrap();
	}
}

impl Print for &[u8] {
	fn print(w: &mut IO, x: Self) {
		w.buf.write_all(x).unwrap();
	}
}

impl Print for &str {
	fn print(w: &mut IO, x: Self) {
		w.print(x.as_bytes());
	}
}

impl Print for String {
	fn print(w: &mut IO, x: Self) {
		w.print(x.as_bytes());
	}
}

impl<T: Print, U: Print> Print for (T, U) {
	fn print(w: &mut IO, (x, y): Self) {
		w.print(x);
		w.print(" ");
		w.print(y);
	}
}

impl<T: Print, U: Print, V: Print> Print for (T, U, V) {
	fn print(w: &mut IO, (x, y, z): Self) {
		w.print(x);
		w.print(" ");
		w.print(y);
		w.print(" ");
		w.print(z);
	}
}

mod neboccoio_macro {
	#[macro_export]
	macro_rules! input {
		(@start $io:tt @read @rest) => {};

		(@start $io:tt @read @rest, $($rest: tt)*) => {
			input!(@start $io @read @rest $($rest)*)
		};

		(@start $io:tt @read @rest mut $($rest:tt)*) => {
			input!(@start $io @read @mut [mut] @rest $($rest)*)
		};

		(@start $io:tt @read @rest $($rest:tt)*) => {
			input!(@start $io @read @mut [] @rest $($rest)*)
		};

		(@start $io:tt @read @mut [$($mut:tt)?] @rest $var:tt: [$kind:tt; $len:expr] $($rest:tt)*) => {
			let $($mut)* $var = $io.scan_vec::<$kind>($len);
			input!(@start $io @read @rest $($rest)*)
		};

		(@start $io:tt @read @mut [$($mut:tt)?] @rest $var:tt: $kind:tt $($rest:tt)*) => {
			let $($mut)* $var = $io.scan::<$kind>();
			input!(@start $io @read @rest $($rest)*)
		};

		(from $io:tt $($rest:tt)*) => {
			input!(@start $io @read @rest $($rest)*)
		};
	}
}

// ------------ io module end ------------

yukicoder

結果

テストケース

コンパイルメッセージ

ソースコード