結果

問題 No.1056 2D Lamps
ユーザー koba-e964koba-e964
提出日時 2021-12-19 20:57:18
言語 Rust
(1.77.0 + proconio)
結果
WA  
実行時間 -
コード長 5,385 bytes
コンパイル時間 14,539 ms
コンパイル使用メモリ 378,708 KB
実行使用メモリ 36,608 KB
最終ジャッジ日時 2024-09-15 14:48:03
合計ジャッジ時間 16,629 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge4
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 WA -
testcase_01 WA -
testcase_02 WA -
testcase_03 WA -
testcase_04 WA -
testcase_05 WA -
testcase_06 WA -
testcase_07 WA -
testcase_08 WA -
testcase_09 WA -
testcase_10 WA -
testcase_11 WA -
testcase_12 WA -
testcase_13 WA -
testcase_14 WA -
testcase_15 WA -
testcase_16 WA -
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: function `find_basis_gf2` is never used
  --> src/main.rs:47:4
   |
47 | fn find_basis_gf2(a: &[Vec<i32>]) -> Vec<(Vec<i32>, Vec<i32>)> {
   |    ^^^^^^^^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: function `naive` is never used
  --> src/main.rs:74:4
   |
74 | fn naive(n: usize) {
   |    ^^^^^

ソースコード

diff # 

#[allow(unused_imports)]
use std::cmp::*;
#[allow(unused_imports)]
use std::collections::*;
use std::io::{Write, BufWriter};
// https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
macro_rules! input {
    ($($r:tt)*) => {
        let stdin = std::io::stdin();
        let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));
        let mut next = move || -> String{
            bytes.by_ref().map(|r|r.unwrap() as char)
                .skip_while(|c|c.is_whitespace())
                .take_while(|c|!c.is_whitespace())
                .collect()
        };
        input_inner!{next, $($r)*}
    };
}

macro_rules! input_inner {
    ($next:expr) => {};
    ($next:expr,) => {};
    ($next:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };
}

macro_rules! read_value {
    ($next:expr, ( $($t:tt),* )) => { ($(read_value!($next, $t)),*) };
    ($next:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
    };
    ($next:expr, chars) => {
        read_value!($next, String).chars().collect::<Vec<char>>()
    };
    ($next:expr, usize1) => (read_value!($next, usize) - 1);
    ($next:expr, [ $t:tt ]) => {{
        let len = read_value!($next, usize);
        read_value!($next, [$t; len])
    }};
    ($next:expr, $t:ty) => ($next().parse::<$t>().expect("Parse error"));
}

// (basis, x) where basis = x a
fn find_basis_gf2(a: &[Vec<i32>]) -> Vec<(Vec<i32>, Vec<i32>)> {
    let n = a.len();
    let m = a[0].len();
    let mut basis: Vec<(Vec<_>, Vec<_>)> = vec![];
    for i in 0..n {
        let mut cur = a[i].to_vec();
        let mut real = vec![0; n];
        real[i] = 1;
        for &(ref b, ref br) in &basis {
            let mut xor = cur.clone();
            for j in 0..m {
                xor[j] ^= b[j];
            }
            if xor < cur {
                cur = xor;
                for j in 0..n {
                    real[j] ^= br[j];
                }
            }
        }
        if cur.iter().any(|&x| x != 0) {
            basis.push((cur, real));
        }
    }
    basis
}

fn naive(n: usize) {
    let mut vs = vec![];
    for i in 0..n {
        let mut v = vec![0; n * n];
        for j in 0..n {
            v[i * n + j] = 1;
        }
        vs.push(v);
    }
    for i in 0..n {
        let mut v = vec![0; n * n];
        for j in 0..n {
            v[j * n + i] = 1;
        }
        vs.push(v);
    }
    for i in 0..2 * n - 1 {
        let mut v = vec![0; n * n];
        for j in 0..min(n, i + 1) {
            let k = i - j;
            if k < n {
                v[j * n + k] = 1;
            }
        }
        vs.push(v);
    }
    for i in 0..2 * n - 1 {
        let mut v = vec![0; n * n];
        for j in 0..min(n, i + 1) {
            let k = i - j;
            if k < n {
                v[j * n + (n - k - 1)] = 1;
            }
        }
        vs.push(v);
    }
    let b = find_basis_gf2(&vs);
    eprintln!("{} => {}", n, b.len());
}

fn red(a: &[Vec<char>]) -> Vec<u64> {
    let n = a.len();
    let mut v = vec![vec![0; n]; n];
    match n {
        1 | 2 | 3 => return vec![0],
        _ => {}
    }
    for i in 0..2 {
        if v[i][0] == 1 {
            for j in 0..n {
                v[i][j] ^= 1;
            }
        }
    }
    for i in 1..2 {
        if v[0][i] == 1 {
            for j in 0..n {
                v[j][i] ^= 1;
            }
        }
    }
    if v[1][1] != 0 {
        for i in 0..3 {
            let j = 2 - i;
            v[i][j] ^= 1;
        }
    }
    for i in 2..n {
        if v[1][i] != 0 {
            for j in 0..n {
                v[j][i] ^= 1;
            }
        }
        if v[i][1] != 0 {
            for j in 0..n {
                v[i][j] ^= 1;
            }
        }
        if v[0][i] != 0 {
            for k in 0..n - i {
                v[k][i + k] ^= 1;
            }
        }
        if v[i][0] != 0 {
            for k in 0..n - i {
                v[i + k][k] ^= 1;
            }
        }
        if v[i][i] != 0 {
            for k in 0..min(n, 2 * i + 1) {
                if 2 * i - k < n {
                    v[2 * i - k][k] ^= 1;
                }
            }
        }
        if v[i - 1][i] != 0 {
            for k in 0..min(n, 2 * i) {
                if 2 * i - 1 - k < n {
                    v[2 * i - 1 - k][k] ^= 1;
                }
            }
        }
    }
    let mut ans = vec![0u64; 625];
    for i in 0..n {
        for j in 0..n {
            if v[i][j] != 0 {
                let idx = i * n + j;
                ans[idx / 64] |= 1 << (idx % 64);
            }
        }
    }
    ans
}

fn main() {
    let out = std::io::stdout();
    let mut out = BufWriter::new(out.lock());
    macro_rules! puts {($($format:tt)*) => (let _ = write!(out,$($format)*););}
    #[allow(unused)]
    macro_rules! putvec {
        ($v:expr) => {
            for i in 0..$v.len() {
                puts!("{}{}", $v[i], if i + 1 == $v.len() {"\n"} else {" "});
            }
        }
    }
    input! {
        n: usize, m: usize,
        a: [[chars; n]; m],
    }
    let mut b = vec![];
    for i in 0..m {
        b.push(red(&a[i]));
    }
    for i in 0..m {
        for j in i + 1..m {
            puts!("{}", if b[i] == b[j] { "1" } else { "0" });
        }
        puts!("\n");
    }
}
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