結果
| 問題 |
No.265 数学のテスト
|
| コンテスト | |
| ユーザー |
 Haar
|
| 提出日時 | 2025-03-13 23:37:55 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
AC
|
| 実行時間 | 14 ms / 2,000 ms |
| コード長 | 10,243 bytes |
| コンパイル時間 | 13,577 ms |
| コンパイル使用メモリ | 399,880 KB |
| 実行使用メモリ | 15,232 KB |
| 最終ジャッジ日時 | 2025-03-13 23:38:11 |
| 合計ジャッジ時間 | 15,651 ms |
|
ジャッジサーバーID （参考情報） |
judge1 / judge5 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 32 |
ソースコード
// Bundled at 2025/03/13 23:37:36 +09:00
// Author: Haar
pub mod main {
use super::*;
#[allow(unused_imports)]
use haar_lib::{get, input, iter::join_str::*, utils::fastio::*};
#[allow(unused_imports)]
use std::cell::{Cell, RefCell};
#[allow(unused_imports)]
use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet};
#[allow(unused_imports)]
use std::io::Write;
#[allow(unused_imports)]
use std::rc::Rc;
#[derive(Clone, Default)]
pub struct Problem {}
#[derive(Clone, Debug)]
struct Poly {
data: [i64; 11],
}
impl Poly {
fn new() -> Self {
Self { data: [0; 11] }
}
fn add(a: Self, b: Self) -> Self {
let mut ret = Poly::new();
for i in 0..=10 {
ret.data[i] = a.data[i] + b.data[i];
}
ret
}
fn mul(a: Self, b: Self) -> Self {
let mut ret = Poly::new();
for i in 0..=10 {
for j in 0..=10 {
if i + j <= 10 {
ret.data[i + j] += a.data[i] * b.data[j];
}
}
}
ret
}
fn differentiate(a: Self) -> Self {
let mut ret = Poly::new();
for i in 0..10 {
ret.data[i] = a.data[i + 1] * (i + 1) as i64;
}
ret
}
}
use std::iter::Peekable;
struct Parser<I: Iterator> {
state: Peekable<I>,
}
impl<I> Parser<I>
where
I: Iterator<Item = char>,
{
fn new(s: I) -> Self {
Self {
state: s.peekable(),
}
}
fn number(&mut self) -> Option<Poly> {
let mut ret = Poly::new();
let mut n = self.state.next()?.to_digit(10)?;
loop {
let c = self.state.peek();
if let Some(c) = c {
if let Some(d) = c.to_digit(10) {
self.state.next();
n = n * 10 + d;
continue;
}
}
break;
}
ret.data[0] = n as i64;
Some(ret)
}
fn factor(&mut self) -> Option<Poly> {
let mut ret = Poly::new();
let c = *self.state.peek()?;
match c {
c if c.is_digit(10) => {
ret = self.number()?;
}
'x' => {
ret.data[1] = 1;
self.state.next();
}
'd' => {
self.state.next();
self.state.next();
let temp = self.expression()?;
ret = Poly::differentiate(temp);
self.state.next();
}
_ => {
return None;
}
}
Some(ret)
}
fn term(&mut self) -> Option<Poly> {
let mut ret = self.factor()?;
loop {
if let Some(&c) = self.state.peek() {
if c == '*' {
self.state.next();
let f = self.factor()?;
ret = Poly::mul(ret, f);
continue;
}
}
break;
}
Some(ret)
}
fn expression(&mut self) -> Option<Poly> {
let mut ret = self.term()?;
loop {
if let Some(&c) = self.state.peek() {
if c == '+' {
self.state.next();
let f = self.term()?;
ret = Poly::add(ret, f);
continue;
}
}
break;
}
Some(ret)
}
}
impl Problem {
pub fn main(&mut self) -> Result<(), Box<dyn std::error::Error>> {
let mut io = FastIO::new();
let _n = io.read_usize();
let d = io.read_usize();
let s = io.read_chars();
let mut parser = Parser::new(s.into_iter());
let ans = parser.expression().unwrap();
io.writeln(ans.data.into_iter().take(d + 1).join_str(" "));
Ok(())
}
}
}
fn main() {
main::Problem::default().main().unwrap();
}
use crate as haar_lib;
pub mod iter {
pub mod join_str {
pub trait JoinStr: Iterator {
fn join_str(self, s: &str) -> String
where
Self: Sized,
Self::Item: ToString,
{
self.map(|x| x.to_string()).collect::<Vec<_>>().join(s)
}
}
impl<I> JoinStr for I where I: Iterator + ?Sized {}
}
}
pub mod macros {
pub mod io {
#[macro_export]
macro_rules! get {
( $in:ident, [$a:tt $(as $to:ty)*; $num:expr] ) => {
{
let n = $num;
(0 .. n).map(|_| get!($in, $a $(as $to)*)).collect::<Vec<_>>()
}
};
( $in:ident, ($($type:tt $(as $to:ty)*),*) ) => {
($(get!($in, $type $(as $to)*)),*)
};
( $in:ident, i8 ) => { $in.read_i64() as i8 };
( $in:ident, i16 ) => { $in.read_i64() as i16 };
( $in:ident, i32 ) => { $in.read_i64() as i32 };
( $in:ident, i64 ) => { $in.read_i64() };
( $in:ident, isize ) => { $in.read_i64() as isize };
( $in:ident, u8 ) => { $in.read_u64() as u8 };
( $in:ident, u16 ) => { $in.read_u64() as u16 };
( $in:ident, u32 ) => { $in.read_u64() as u32 };
( $in:ident, u64 ) => { $in.read_u64() };
( $in:ident, usize ) => { $in.read_u64() as usize };
( $in:ident, [char] ) => { $in.read_chars() };
( $in:ident, $from:tt as $to:ty ) => { <$to>::from(get!($in, $from)) };
}
#[macro_export]
macro_rules! input {
( @inner $in:ident, mut $name:ident : $type:tt ) => {
let mut $name = get!($in, $type);
};
( @inner $in:ident, mut $name:ident : $type:tt as $to:ty ) => {
let mut $name = get!($in, $type as $to);
};
( @inner $in:ident, $name:ident : $type:tt ) => {
let $name = get!($in, $type);
};
( @inner $in:ident, $name:ident : $type:tt as $to:ty ) => {
let $name = get!($in, $type as $to);
};
( $in:ident >> $($($names:ident)* : $type:tt $(as $to:ty)*),* ) => {
$(input!(@inner $in, $($names)* : $type $(as $to)*);)*
}
}
}
}
pub mod utils {
pub mod fastio {
use std::fmt::Display;
use std::io::{Read, Write};
pub struct FastIO {
in_bytes: Vec<u8>,
in_cur: usize,
out_buf: std::io::BufWriter<std::io::Stdout>,
}
impl FastIO {
pub fn new() -> Self {
let mut s = vec![];
std::io::stdin().read_to_end(&mut s).unwrap();
let cout = std::io::stdout();
Self {
in_bytes: s,
in_cur: 0,
out_buf: std::io::BufWriter::new(cout),
}
}
#[inline]
pub fn getc(&mut self) -> Option<u8> {
let c = *self.in_bytes.get(self.in_cur)?;
self.in_cur += 1;
Some(c)
}
#[inline]
pub fn peek(&self) -> Option<u8> {
Some(*self.in_bytes.get(self.in_cur)?)
}
#[inline]
pub fn skip(&mut self) {
while self.peek().is_some_and(|c| c.is_ascii_whitespace()) {
self.in_cur += 1;
}
}
pub fn read_u64(&mut self) -> u64 {
self.skip();
let mut ret: u64 = 0;
while self.peek().is_some_and(|c| c.is_ascii_digit()) {
ret = ret * 10 + (self.in_bytes[self.in_cur] - b'0') as u64;
self.in_cur += 1;
}
ret
}
pub fn read_u32(&mut self) -> u32 {
self.read_u64() as u32
}
pub fn read_usize(&mut self) -> usize {
self.read_u64() as usize
}
pub fn read_i64(&mut self) -> i64 {
self.skip();
let mut ret: i64 = 0;
let minus = if self.peek() == Some(b'-') {
self.in_cur += 1;
true
} else {
false
};
while self.peek().is_some_and(|c| c.is_ascii_digit()) {
ret = ret * 10 + (self.in_bytes[self.in_cur] - b'0') as i64;
self.in_cur += 1;
}
if minus {
ret = -ret;
}
ret
}
pub fn read_i32(&mut self) -> i32 {
self.read_i64() as i32
}
pub fn read_isize(&mut self) -> isize {
self.read_i64() as isize
}
pub fn read_f64(&mut self) -> f64 {
self.read_chars()
.into_iter()
.collect::<String>()
.parse()
.unwrap()
}
pub fn read_chars(&mut self) -> Vec<char> {
self.skip();
let mut ret = vec![];
while self.peek().is_some_and(|c| c.is_ascii_graphic()) {
ret.push(self.in_bytes[self.in_cur] as char);
self.in_cur += 1;
}
ret
}
pub fn write<T: Display>(&mut self, s: T) {
self.out_buf.write_all(format!("{}", s).as_bytes()).unwrap();
}
pub fn writeln<T: Display>(&mut self, s: T) {
self.write(s);
self.out_buf.write_all(&[b'\n']).unwrap();
}
}
impl Drop for FastIO {
fn drop(&mut self) {
self.out_buf.flush().unwrap();
}
}
}
}