結果

問題 No.1142 XOR と XOR
ユーザー fukafukatanifukafukatani
提出日時 2021-01-10 22:26:16
言語 Rust
(1.77.0 + proconio)
結果
MLE  
実行時間 -
コード長 6,316 bytes
コンパイル時間 20,598 ms
コンパイル使用メモリ 401,132 KB
実行使用メモリ 813,220 KB
最終ジャッジ日時 2024-11-21 08:35:43
合計ジャッジ時間 46,280 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge1
このコードへのチャレンジ
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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
6,816 KB
testcase_01 AC 1 ms
6,816 KB
testcase_02 AC 2 ms
6,816 KB
testcase_03 MLE -
testcase_04 MLE -
testcase_05 MLE -
testcase_06 MLE -
testcase_07 MLE -
testcase_08 MLE -
testcase_09 MLE -
testcase_10 MLE -
testcase_11 AC 6 ms
6,688 KB
testcase_12 AC 1 ms
6,692 KB
testcase_13 AC 1 ms
6,688 KB
testcase_14 MLE -
testcase_15 MLE -
testcase_16 AC 214 ms
93,056 KB
testcase_17 MLE -
testcase_18 AC 613 ms
453,376 KB
testcase_19 MLE -
testcase_20 MLE -
testcase_21 MLE -
testcase_22 AC 635 ms
310,656 KB
testcase_23 MLE -
testcase_24 MLE -
testcase_25 MLE -
testcase_26 MLE -
testcase_27 MLE -
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コンパイルメッセージ
warning: unused variable: `n`
  --> src/main.rs:20:10
   |
20 |     let (n, m, k) = (v[0], v[1], v[2]);
   |          ^ help: if this is intentional, prefix it with an underscore: `_n`
   |
   = note: `#[warn(unused_variables)]` on by default

warning: unused variable: `m`
  --> src/main.rs:20:13
   |
20 |     let (n, m, k) = (v[0], v[1], v[2]);
   |             ^ help: if this is intentional, prefix it with an underscore: `_m`

warning: associated items `set_modulus`, `pow`, and `inv` are never used
   --> src/main.rs:72:8
    |
71  | impl Modulo {
    | ----------- associated items in this implementation
72  |     fn set_modulus(m: i64) {
    |        ^^^^^^^^^^^
...
90  |     fn pow(self, p: i64) -> Modulo {
    |        ^^^
...
102 |     fn inv(self) -> Modulo {
    |        ^^^
    |
    = note: `#[warn(dead_code)]` on by default

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::<usize>();
    let (n, m, k) = (v[0], v[1], v[2]);
    let a = read_vec::<usize>();
    let b = read_vec::<usize>();
    let dp_a = solve(a);
    let dp_b = solve(b);
    let mut ans = Modulo(0);
    for i in 0..1024 {
        ans += dp_a[i] * dp_b[k ^ i];
    }
    println!("{}", ans);
}

fn solve(a: Vec<usize>) -> Vec<Modulo> {
    let n = a.len();
    let mut dp = vec![vec![Modulo(0); 1024]; n];
    for i in 0..n {
        dp[i][a[i]] += 1;
        if i == 0 {
            continue;
        }
        for prev in 0..1024 {
            let val = dp[i - 1][prev];
            dp[i][prev ^ a[i]] += val;
        }
    }

    let mut ret = vec![Modulo(0); 1024];
    for i in 0..n {
        for state in 0..1024 {
            ret[state] += dp[i][state];
        }
    }
    ret
}

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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