結果

問題 No.1492 01文字列と転倒
ユーザー fukafukatanifukafukatani
提出日時 2021-04-30 22:24:24
言語 Rust
(1.72.1)
結果
AC  
実行時間 3,898 ms / 4,000 ms
コード長 6,587 bytes
コンパイル時間 995 ms
コンパイル使用メモリ 153,552 KB
実行使用メモリ 17,784 KB
最終ジャッジ日時 2023-09-08 06:15:28
合計ジャッジ時間 32,831 ms
ジャッジサーバーID
(参考情報)
judge14 / judge15
このコードへのチャレンジ(β)

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
4,384 KB
testcase_01 AC 1 ms
4,384 KB
testcase_02 AC 3,898 ms
17,776 KB
testcase_03 AC 3,580 ms
16,652 KB
testcase_04 AC 3,302 ms
15,924 KB
testcase_05 AC 2,481 ms
14,084 KB
testcase_06 AC 2,844 ms
14,540 KB
testcase_07 AC 3,259 ms
15,400 KB
testcase_08 AC 3,798 ms
17,784 KB
testcase_09 AC 1 ms
4,384 KB
testcase_10 AC 1 ms
4,380 KB
testcase_11 AC 1 ms
4,384 KB
testcase_12 AC 1 ms
4,384 KB
testcase_13 AC 1 ms
4,380 KB
testcase_14 AC 2,895 ms
14,612 KB
testcase_15 AC 3 ms
4,380 KB
testcase_16 AC 22 ms
4,380 KB
testcase_17 AC 2,503 ms
14,012 KB
testcase_18 AC 24 ms
4,380 KB
testcase_19 AC 2 ms
4,380 KB
testcase_20 AC 15 ms
4,380 KB
testcase_21 AC 1,863 ms
12,760 KB
testcase_22 AC 22 ms
4,380 KB
testcase_23 AC 9 ms
4,384 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: associated function `pow` is never used
  --> Main.rs:86:8
   |
86 |     fn pow(self, p: i64) -> Modulo {
   |        ^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: associated function `inv` is never used
  --> Main.rs:98:8
   |
98 |     fn inv(self) -> Modulo {
   |        ^^^

warning: 2 warnings emitted

ソースコード

diff #

#![allow(unused_imports)]
use std::cmp::*;
use std::collections::*;
use std::io::Write;
use std::ops::Bound::*;

#[allow(unused_macros)]
macro_rules! debug {
    ($($e:expr),*) => {
        #[cfg(debug_assertions)]
        $({
            let (e, mut err) = (stringify!($e), std::io::stderr());
            writeln!(err, "{} = {:?}", e, $e).unwrap()
        })*
    };
}

fn main() {
    let v = read_vec::<i64>();
    let (n, m) = (v[0] as usize, v[1]);
    Modulo::set_modulus(m);
    let mut dp = vec![vec![Modulo(0); n * n + 1]; n + 1];
    let mut next = vec![vec![Modulo(0); n * n + 1]; n + 1];
    dp[0][0] += 1;
    for i in 0..2 * n {
        for j in 0..=n * n {
            for k in 0..=n {
                next[k][j] = Modulo(0);
            }
        }

        for prev_reversed in 0..=n * min(n, i) {
            for prev_zero_used in 0..=min(i, n) {
                let prev_one_used = i - prev_zero_used;
                if prev_zero_used < n && prev_reversed + prev_one_used <= n * n {
                    next[prev_zero_used + 1][prev_reversed + prev_one_used] +=
                        dp[prev_zero_used][prev_reversed];
                }
                if prev_zero_used > prev_one_used {
                    next[prev_zero_used][prev_reversed] += dp[prev_zero_used][prev_reversed];
                }
            }
        }
        std::mem::swap(&mut dp, &mut next);
    }
    for &ans in &dp[n] {
        println!("{}", ans);
    }
}

fn read<T: std::str::FromStr>() -> T {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim().parse().ok().unwrap()
}

fn read_vec<T: std::str::FromStr>() -> Vec<T> {
    read::<String>()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}

#[derive(Clone, Copy, Debug, Default, Eq, Hash, Ord, PartialEq, PartialOrd)]
struct Modulo(i64);
static mut MODULUS: i64 = 1000_000_000 + 7;
impl Modulo {
    fn set_modulus(m: i64) {
        unsafe {
            MODULUS = m;
        }
    }
    fn get_modulus() -> i64 {
        unsafe { MODULUS }
    }
    fn new(x: i64) -> Modulo {
        let m = Modulo::get_modulus();
        if x < 0 {
            Modulo(x % m + m)
        } else if x < m {
            Modulo(x)
        } else {
            Modulo(x % m)
        }
    }
    fn pow(self, p: i64) -> Modulo {
        if p == 0 {
            Modulo(1)
        } else {
            let mut t = self.pow(p / 2);
            t *= t;
            if p & 1 == 1 {
                t *= self;
            }
            t
        }
    }
    fn inv(self) -> Modulo {
        self.pow(Modulo::get_modulus() - 2)
    }
}
impl std::fmt::Display for Modulo {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        self.0.fmt(f)
    }
}
impl std::ops::AddAssign for Modulo {
    fn add_assign(&mut self, other: Modulo) {
        let m = Modulo::get_modulus();
        self.0 += other.0;
        if self.0 >= m {
            self.0 -= m;
        }
    }
}
impl std::ops::MulAssign for Modulo {
    fn mul_assign(&mut self, other: Modulo) {
        let m = Modulo::get_modulus();
        self.0 *= other.0;
        self.0 %= m;
    }
}
impl std::ops::SubAssign for Modulo {
    fn sub_assign(&mut self, other: Modulo) {
        let m = Modulo::get_modulus();
        self.0 += m - other.0;
        if self.0 >= m {
            self.0 -= m;
        }
    }
}
macro_rules! impl_modulo_ops {
    ($imp:ident, $method:ident, $assign_imp:ident, $assign_method:ident) => {
        impl<'a> std::ops::$assign_imp<&'a Modulo> for Modulo {
            fn $assign_method(&mut self, other: &'a Modulo) {
                std::ops::$assign_imp::$assign_method(self, *other);
            }
        }
        impl std::ops::$imp for Modulo {
            type Output = Modulo;
            fn $method(self, other: Modulo) -> Modulo {
                let mut x = self;
                std::ops::$assign_imp::$assign_method(&mut x, other);
                x
            }
        }
        impl<'a> std::ops::$imp<Modulo> for &'a Modulo {
            type Output = Modulo;
            fn $method(self, other: Modulo) -> Modulo {
                std::ops::$imp::$method(*self, other)
            }
        }
        impl<'a> std::ops::$imp<&'a Modulo> for Modulo {
            type Output = Modulo;
            fn $method(self, other: &'a Modulo) -> Modulo {
                std::ops::$imp::$method(self, *other)
            }
        }
        impl<'a, 'b> std::ops::$imp<&'b Modulo> for &'a Modulo {
            type Output = Modulo;
            fn $method(self, other: &'b Modulo) -> Modulo {
                std::ops::$imp::$method(*self, *other)
            }
        }
        impl std::ops::$assign_imp<i64> for Modulo {
            fn $assign_method(&mut self, other: i64) {
                std::ops::$assign_imp::$assign_method(self, Modulo::new(other));
            }
        }
        impl<'a> std::ops::$assign_imp<&'a i64> for Modulo {
            fn $assign_method(&mut self, other: &'a i64) {
                std::ops::$assign_imp::$assign_method(self, *other);
            }
        }
        impl std::ops::$imp<i64> for Modulo {
            type Output = Modulo;
            fn $method(self, other: i64) -> Modulo {
                let mut x = self;
                std::ops::$assign_imp::$assign_method(&mut x, other);
                x
            }
        }
        impl<'a> std::ops::$imp<&'a i64> for Modulo {
            type Output = Modulo;
            fn $method(self, other: &'a i64) -> Modulo {
                std::ops::$imp::$method(self, *other)
            }
        }
        impl<'a> std::ops::$imp<i64> for &'a Modulo {
            type Output = Modulo;
            fn $method(self, other: i64) -> Modulo {
                std::ops::$imp::$method(*self, other)
            }
        }
        impl<'a, 'b> std::ops::$imp<&'b i64> for &'a Modulo {
            type Output = Modulo;
            fn $method(self, other: &'b i64) -> Modulo {
                std::ops::$imp::$method(*self, *other)
            }
        }
    };
}
impl_modulo_ops!(Add, add, AddAssign, add_assign);
impl_modulo_ops!(Mul, mul, MulAssign, mul_assign);
impl_modulo_ops!(Sub, sub, SubAssign, sub_assign);

use std::iter::Sum;
impl Sum for Modulo {
    fn sum<I>(iter: I) -> Self
    where
        I: Iterator<Item = Modulo>,
    {
        iter.fold(Modulo(0), |a, b| a + b)
    }
}

impl<'a> Sum<&'a Modulo> for Modulo {
    fn sum<I>(iter: I) -> Self
    where
        I: Iterator<Item = &'a Self>,
    {
        iter.fold(Modulo(0), |a, b| a + b)
    }
}
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