結果
問題 | No.385 カップ麺生活 |
ユーザー |
|
提出日時 | 2021-03-02 19:41:09 |
言語 | Rust (1.83.0 + proconio) |
結果 |
AC
|
実行時間 | 1 ms / 2,000 ms |
コード長 | 9,834 bytes |
コンパイル時間 | 12,434 ms |
コンパイル使用メモリ | 377,988 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-04 23:07:45 |
合計ジャッジ時間 | 13,541 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 32 |
ソースコード
fn main() {let mut io = IO::new();input!{ from io,m: usize,n: usize,c: [usize; n]}let mut dp = vec![std::i64::MIN; m+1];dp[0] = 0;for &x in &c {for i in x..=m {dp[i] = dp[i].max(dp[i-x] + 1);}}let sieve = atkin_sieve(m as usize);let mut ans = *dp.iter().max().unwrap();for x in sieve.into_iter().map(|x| x as usize) {if dp[m-x] > 0 {ans += dp[m-x];}}io.println(ans);}pub fn atkin_sieve(n: usize) -> Vec<i64> {let mut sieve = BitSet::new(n+1);let lim = (n as f64).sqrt() as usize + 1;for z in (1..6).step_by(4) {for y in (z..lim).step_by(6) {for x in 1..lim {if 4 * x * x + y * y > n { break; }sieve.flip(4 * x * x + y * y);}for x in (y+1..lim).step_by(2) {if 3 * x * x - y * y > n { break; }sieve.flip(3 * x * x - y * y);}}}for z in (2..5).step_by(2) {for y in (z..lim).step_by(6) {for x in (1..lim).step_by(2) {if 3 * x * x + y * y > n { break; }sieve.flip(3 * x * x + y * y);}for x in (y+1..lim).step_by(2) {if 3 * x * x - y * y > n { break; }sieve.flip(3 * x * x - y * y);}}}for z in 1..3 {for y in (3..lim).step_by(6) {for x in (z..lim).step_by(3) {if 4 * x * x + y * y > n { break; }sieve.flip(4 * x * x + y * y);}}}for i in 5..lim {if sieve.access(i) {for j in (i*i..n+1).step_by(i*i) {sieve.set(j, false);}}}sieve.set(2, true);sieve.set(3, true);sieve.collect().into_iter().map(|x| x as i64).collect()}use std::ops::{Shl, Shr, BitAnd, BitOr, BitXor, Not};#[derive(Clone)]pub struct BitSet {data: Vec<u32>,size: usize}impl BitSet {pub fn new(size: usize) -> Self {let data = vec![0; (size >> 5) + 1];BitSet{ data, size }}pub fn fill(&mut self) {self.data.iter_mut().for_each(|x| *x = 0xffffffff );}pub fn access(&self, pos: usize) -> bool {(self.data[pos >> 5] >> (pos & 31)) & 1 == 1}pub fn set(&mut self, pos: usize, v: bool) {if v {self.data[pos >> 5] |= 1 << (pos & 31);} else {self.data[pos >> 5] &= !(1 << (pos & 31));}}pub fn flip(&mut self, pos: usize) {self.data[pos >> 5] ^= 1 << (pos & 31);}pub fn collect(&self) -> Vec<u64> {(0..self.size).filter(|&i| self.access(i)).map(|x| x as u64).collect::<Vec<u64>>()}fn resize(&mut self, l: usize) {if self.size > l { return; }self.data.resize((l >> 5) + 1, 0);self.size = l;}}impl BitAnd for BitSet {type Output = Self;fn bitand(mut self, rhs: Self) -> Self {let m = std::cmp::max(self.size, rhs.size);self.resize(m);for (u, v) in self.data.iter_mut().zip(rhs.data.iter()) {*u &= v;}self}}impl BitOr for BitSet {type Output = Self;fn bitor(mut self, rhs: Self) -> Self {let m = std::cmp::max(self.size, rhs.size);self.resize(m);for (u, v) in self.data.iter_mut().zip(rhs.data.iter()) {*u |= v;}self}}impl BitXor for BitSet {type Output = Self;fn bitxor(mut self, rhs: Self) -> Self {let m = std::cmp::max(self.size, rhs.size);self.resize(m);for (u, v) in self.data.iter_mut().zip(rhs.data.iter()) {*u ^= v;}self}}impl Not for BitSet {type Output = Self;fn not(mut self) -> Self {for u in self.data.iter_mut() {*u = !*u;}self}}impl Shr<usize> for BitSet {type Output = Self;fn shr(mut self, rhs: usize) -> Self::Output {let big = rhs >> 5;let sml = (rhs & 31) as u32;let mask = (1 << sml) - 1;for i in 0..self.data.len() {self.data[i] = if i + big < self.data.len() {self.data[i+big]} else {0};}let mut r = 0;for i in (0..self.data.len()).rev() {let u = self.data[i];self.data[i] = (u & !mask | r).rotate_right(sml);r = u & mask;}self}}impl Shl<usize> for BitSet {type Output = Self;fn shl(mut self, rhs: usize) -> Self::Output {let n = self.data.len();let big = rhs >> 5;let sml = (rhs & 31) as u32;let mask = (1 << sml) - 1;for i in (0..n).rev() {self.data[i] = if i >= big {self.data[i-big]} else {0};}let mut r = 0;for i in 0..n {let u = self.data[i].rotate_left(sml);self.data[i] = u & !mask | r;r = u & mask;}self.data[n-1] &= (1 << (self.size & 31)) - 1;self}}// ------------ 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 $t {type Output = Self;fn scan(s: &mut IO) -> Self::Output {s.scan_str().parse().unwrap()}})*};}impl_scan!(i16, i32, i64, isize, u16, u32, u64, usize, String, f32, f64);pub enum Bytes {}impl Scan for Bytes {type Output = &'static [u8];fn scan(s: &mut IO) -> Self::Output {s.scan_str().as_bytes()}}pub enum Chars {}impl Scan for Chars {type Output = Vec<char>;fn scan(s: &mut IO) -> Self::Output {s.scan_str().chars().collect()}}pub enum Usize1 {}impl Scan for Usize1 {type Output = usize;fn scan(s: &mut IO) -> Self::Output {s.scan::<usize>().wrapping_sub(1)}}impl<T: Scan, U: Scan> Scan for (T, U) {type Output = (T::Output, U::Output);fn scan(s: &mut IO) -> Self::Output {(T::scan(s), U::scan(s))}}impl<T: Scan, U: Scan, V: Scan> Scan for (T, U, V) {type Output = (T::Output, U::Output, V::Output);fn scan(s: &mut IO) -> Self::Output {(T::scan(s), U::scan(s), V::scan(s))}}impl<T: Scan, U: Scan, V: Scan, W: Scan> Scan for (T, U, V, W) {type Output = (T::Output, U::Output, V::Output, W::Output);fn scan(s: &mut IO) -> Self::Output {(T::scan(s), U::scan(s), V::scan(s), W::scan(s))}}pub trait Print {fn print(w: &mut IO, x: Self);}macro_rules! impl_print_int {($($t:ty),*) => {$(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, f32, f64);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 ------------