#509995 (Rust) No.1111 コード進行

• 問題: No.1111 コード進行
• ユーザー: cotton_fn_
• 提出日時: 2020-07-10 22:24:16
• 言語: Rust (1.77.0)
• 結果: AC
• 実行時間: 116 ms / 2,000 ms
• コード長: 4,769 bytes
• コンパイル時間: 1,564 ms
• コンパイル使用メモリ: 180,112 KB
• 実行使用メモリ: 6,944 KB
• 最終ジャッジ日時: 2024-04-19 17:35:00
• 合計ジャッジ時間: 2,647 ms
• ジャッジサーバーID （参考情報）: judge1 / judge3

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	0 ms; 6,812 KB
testcase_02	AC	1 ms; 6,944 KB
testcase_03	AC	1 ms; 6,940 KB
testcase_04	AC	0 ms; 6,940 KB
testcase_05	AC	3 ms; 6,940 KB
testcase_06	AC	3 ms; 6,940 KB
testcase_07	AC	3 ms; 6,944 KB
testcase_08	AC	2 ms; 6,944 KB
testcase_09	AC	3 ms; 6,940 KB
testcase_10	AC	2 ms; 6,940 KB
testcase_11	AC	1 ms; 6,940 KB
testcase_12	AC	4 ms; 6,940 KB
testcase_13	AC	2 ms; 6,940 KB
testcase_14	AC	5 ms; 6,944 KB
testcase_15	AC	1 ms; 6,940 KB
testcase_16	AC	3 ms; 6,944 KB
testcase_17	AC	3 ms; 6,940 KB
testcase_18	AC	2 ms; 6,944 KB
testcase_19	AC	1 ms; 6,940 KB
testcase_20	AC	2 ms; 6,944 KB
testcase_21	AC	1 ms; 6,944 KB
testcase_22	AC	4 ms; 6,944 KB
testcase_23	AC	2 ms; 6,944 KB
testcase_24	AC	2 ms; 6,944 KB
testcase_25	AC	5 ms; 6,940 KB
testcase_26	AC	3 ms; 6,940 KB
testcase_27	AC	2 ms; 6,944 KB
testcase_28	AC	25 ms; 6,944 KB
testcase_29	AC	11 ms; 6,940 KB
testcase_30	AC	20 ms; 6,940 KB
testcase_31	AC	4 ms; 6,944 KB
testcase_32	AC	23 ms; 6,940 KB
testcase_33	AC	22 ms; 6,940 KB
testcase_34	AC	19 ms; 6,944 KB
testcase_35	AC	24 ms; 6,940 KB
testcase_36	AC	52 ms; 6,944 KB
testcase_37	AC	13 ms; 6,944 KB
testcase_38	AC	11 ms; 6,940 KB
testcase_39	AC	34 ms; 6,940 KB
testcase_40	AC	39 ms; 6,944 KB
testcase_41	AC	27 ms; 6,944 KB
testcase_42	AC	22 ms; 6,944 KB
testcase_43	AC	22 ms; 6,944 KB
testcase_44	AC	7 ms; 6,944 KB
testcase_45	AC	21 ms; 6,944 KB
testcase_46	AC	1 ms; 6,944 KB
testcase_47	AC	116 ms; 6,940 KB
testcase_48	AC	1 ms; 6,940 KB
testcase_49	AC	2 ms; 6,940 KB

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(|| {
            let stdin = io::stdin();
            let stdout = io::stdout();
            run(KInput::new(stdin.lock()), io::BufWriter::new(stdout.lock()))
        })?
        .join()
        .unwrap();
    Ok(())
}

fn run<I: Input, O: Write>(mut kin: I, mut out: O) {
    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(); } }
    }

    const P: i64 = 1e9 as i64 + 7;
    let (n, m, k): (usize, usize, usize) = kin.input();
    let mut g = vec![Vec::new(); 300];
    for (p, q, c) in kin.iter::<(usize, usize, usize)>().take(m) {
        g[p - 1].push((q - 1, c));
    }

    let mut dp = vec![[0; 300]; k + 1];
    dp[0] = [1; 300];
    for _ in 0..n - 1 {
        let mut dp_next = vec![[0; 300]; k + 1];
        for c in 0..=k {
            for u in 0..300 {
                for &(v, d) in &g[u] {
                    if c + d <= k {
                        dp_next[c + d][v] += dp[c][u];
                        dp_next[c + d][v] %= P;
                    }
                }
            }
        }
        dp = dp_next;
    }

    let mut ans = dp[k].iter().sum::<i64>();
    ans %= P;
    outputln!("{}", ans);
}

// -----------------------------------------------------------------------------
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);
    #[macro_export]
    macro_rules! kdbg {
        ($($v:expr),*) => {
            if cfg!(debug_assertions) { dbg!($($v),*) } else { ($($v),*) }
        }
    }
}