結果
| 問題 |
No.1050 Zero (Maximum)
|
| コンテスト | |
| ユーザー |
cotton_fn_
|
| 提出日時 | 2020-05-09 05:15:38 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
AC
|
| 実行時間 | 28 ms / 2,000 ms |
| コード長 | 5,292 bytes |
| コンパイル時間 | 20,967 ms |
| コンパイル使用メモリ | 387,504 KB |
| 実行使用メモリ | 5,376 KB |
| 最終ジャッジ日時 | 2024-07-04 17:38:48 |
| 合計ジャッジ時間 | 23,049 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 15 |
ソースコード
#![allow(unused_imports, unused_macros)]
use kyoproio::*;
use std::{
collections::*,
io::{self, prelude::*},
iter,
mem::{replace, swap},
};
fn main() -> io::Result<()> {
std::thread::Builder::new()
.stack_size(64 * 1024 * 1024)
.spawn(solve)?
.join()
.unwrap();
Ok(())
}
fn solve() {
let stdin = io::stdin();
let mut kin = KInput::new(stdin.lock());
let stdout = io::stdout();
let mut out = io::BufWriter::new(stdout.lock());
macro_rules! output { ($($args:expr),+) => { write!(&mut out, $($args),+).unwrap(); }; }
macro_rules! outputln {
($($args:expr),+) => { output!($($args),+); outputln!(); };
() => { output!("\n"); if cfg!(debug_assertions) { out.flush().unwrap(); } }
}
let (m, k): (usize, i64) = kin.input();
let mut a = SquareMatrix::zeros();
for i in 0..m {
for j in 0..m {
a[(i + j) % m][i] += 1;
a[(i * j) % m][i] += 1;
}
}
let b = a.pow(k);
outputln!("{}", b[0][0]);
}
const MOD: i64 = 1e9 as i64 + 7;
const N: usize = 50;
#[derive(Clone)]
struct SquareMatrix(Box<[[i64; N]]>);
impl SquareMatrix {
fn zeros() -> Self {
Self(vec![[0; N]; N].into())
}
fn id() -> Self {
let mut a = Self::zeros();
for i in 0..N {
a[i][i] = 1;
}
a
}
fn mul(&self, rhs: &Self) -> Self {
let mut a = Self::zeros();
for i in 0..N {
for j in 0..N {
for k in 0..N {
a[i][j] = (a[i][j] + self[i][k] * rhs[k][j]) % MOD;
}
}
}
a
}
fn pow(&self, mut k: i64) -> Self {
let mut a = self.clone();
let mut b = Self::id();
while k > 0 {
if k & 1 == 1 {
b = b.mul(&a);
}
a = a.mul(&a);
k >>= 1;
}
b
}
}
use std::ops::*;
impl<I: std::slice::SliceIndex<[[i64; N]]>> Index<I> for SquareMatrix {
type Output = I::Output;
fn index(&self, i: I) -> &Self::Output {
&self.0[i]
}
}
impl<I: std::slice::SliceIndex<[[i64; N]]>> IndexMut<I> for SquareMatrix {
fn index_mut(&mut self, i: I) -> &mut Self::Output {
&mut self.0[i]
}
}
// -----------------------------------------------------------------------------
pub mod kyoproio {
use std::io::prelude::*;
pub trait Input {
fn str(&mut self) -> &str;
fn input<T: InputParse>(&mut self) -> T {
T::input(self)
}
fn iter<T: InputParse>(&mut self) -> Iter<T, Self> {
Iter(self, std::marker::PhantomData)
}
fn seq<T: InputParse, B: std::iter::FromIterator<T>>(&mut self, n: usize) -> B {
self.iter().take(n).collect()
}
}
pub struct KInput<R> {
src: R,
buf: String,
pos: usize,
}
impl<R: BufRead> KInput<R> {
pub fn new(src: R) -> Self {
Self {
src,
buf: String::with_capacity(1024),
pos: 0,
}
}
}
impl<R: BufRead> Input for KInput<R> {
fn str(&mut self) -> &str {
loop {
if self.pos >= self.buf.len() {
self.pos = 0;
self.buf.clear();
if self.src.read_line(&mut self.buf).expect("io error") == 0 {
return &self.buf;
}
}
let range = self.pos
..self.buf[self.pos..]
.find(|c: char| c.is_ascii_whitespace())
.map(|i| i + self.pos)
.unwrap_or_else(|| self.buf.len());
self.pos = range.end + 1;
if range.end > range.start {
return &self.buf[range];
}
}
}
}
pub struct Iter<'a, T, I: ?Sized>(&'a mut I, std::marker::PhantomData<*const T>);
impl<'a, T: InputParse, I: Input + ?Sized> Iterator for Iter<'a, T, I> {
type Item = T;
fn next(&mut self) -> Option<T> {
Some(self.0.input())
}
}
pub trait InputParse: Sized {
fn input<I: Input + ?Sized>(src: &mut I) -> Self;
}
impl InputParse for Vec<u8> {
fn input<I: Input + ?Sized>(src: &mut I) -> Self {
src.str().as_bytes().to_owned()
}
}
macro_rules! from_str_impl {
{ $($T:ty)* } => {
$(impl InputParse for $T {
fn input<I: Input + ?Sized>(src: &mut I) -> Self {
src.str().parse::<$T>().expect("parse error")
}
})*
}
}
from_str_impl! {
String char bool f32 f64 isize i8 i16 i32 i64 i128 usize u8 u16 u32 u64 u128
}
macro_rules! tuple_impl {
($H:ident $($T:ident)*) => {
impl<$H: InputParse, $($T: InputParse),*> InputParse for ($H, $($T),*) {
fn input<I: Input + ?Sized>(src: &mut I) -> Self {
($H::input(src), $($T::input(src)),*)
}
}
tuple_impl!($($T)*);
};
() => {}
}
tuple_impl!(A B C D E F G);
}
cotton_fn_