#602186 (Rust) No.1330 Multiply or Divide

• 問題: No.1330 Multiply or Divide
• ユーザー: koba-e964
• 提出日時: 2021-01-10 18:47:41
• 言語: Rust (1.77.0 + proconio)
• 結果: WA
• 実行時間: -
• コード長: 3,996 bytes
• コンパイル時間: 13,170 ms
• コンパイル使用メモリ: 402,332 KB
• 実行使用メモリ: 6,824 KB
• 最終ジャッジ日時: 2024-11-21 07:12:28
• 合計ジャッジ時間: 15,466 ms
• ジャッジサーバーID （参考情報）: judge4 / judge1

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	19 ms; 6,820 KB
testcase_02	WA	-
testcase_03	AC	1 ms; 6,820 KB
testcase_04	AC	1 ms; 6,816 KB
testcase_05	AC	1 ms; 6,816 KB
testcase_06	AC	18 ms; 6,816 KB
testcase_07	AC	55 ms; 6,820 KB
testcase_08	AC	32 ms; 6,824 KB
testcase_09	AC	34 ms; 6,816 KB
testcase_10	AC	31 ms; 6,816 KB
testcase_11	AC	30 ms; 6,816 KB
testcase_12	AC	32 ms; 6,820 KB
testcase_13	AC	1 ms; 6,820 KB
testcase_14	AC	1 ms; 6,816 KB
testcase_15	AC	1 ms; 6,820 KB
testcase_16	AC	1 ms; 6,820 KB
testcase_17	AC	1 ms; 6,820 KB
testcase_18	AC	28 ms; 6,816 KB
testcase_19	AC	27 ms; 6,816 KB
testcase_20	AC	27 ms; 6,820 KB
testcase_21	AC	27 ms; 6,820 KB
testcase_22	AC	27 ms; 6,820 KB
testcase_23	AC	28 ms; 6,816 KB
testcase_24	AC	1 ms; 6,820 KB
testcase_25	AC	1 ms; 6,820 KB
testcase_26	AC	1 ms; 6,816 KB
testcase_27	AC	1 ms; 6,816 KB
testcase_28	AC	1 ms; 6,816 KB
testcase_29	AC	1 ms; 6,816 KB
testcase_30	AC	1 ms; 6,816 KB
testcase_31	AC	1 ms; 6,816 KB
testcase_32	AC	1 ms; 6,816 KB
testcase_33	AC	1 ms; 6,816 KB
testcase_34	AC	20 ms; 6,820 KB
testcase_35	AC	6 ms; 6,816 KB
testcase_36	AC	19 ms; 6,816 KB
testcase_37	AC	17 ms; 6,820 KB
testcase_38	AC	11 ms; 6,816 KB
testcase_39	AC	7 ms; 6,820 KB
testcase_40	AC	9 ms; 6,820 KB
testcase_41	AC	5 ms; 6,816 KB
testcase_42	AC	15 ms; 6,820 KB
testcase_43	AC	18 ms; 6,816 KB
testcase_44	AC	17 ms; 6,816 KB
testcase_45	AC	18 ms; 6,816 KB

ソースコード

#[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, [graph1; $len:expr]) => {{
        let mut g = vec![vec![]; $len];
        let ab = read_value!($next, [(usize1, usize1)]);
        for (a, b) in ab {
            g[a].push(b);
            g[b].push(a);
        }
        g
    }};
    ($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"));
}

trait Change {
    fn chmax(&mut self, x: Self);
    fn chmin(&mut self, x: Self);
}
impl<T: PartialOrd> Change for T {
    fn chmax(&mut self, x: T) {
        if *self < x { *self = x; }
    }
    fn chmin(&mut self, x: T) {
        if *self > x { *self = x; }
    }
}

#[allow(unused)]
macro_rules! debug {
    ($($format:tt)*) => (write!(std::io::stderr(), $($format)*).unwrap());
}
#[allow(unused)]
macro_rules! debugln {
    ($($format:tt)*) => (writeln!(std::io::stderr(), $($format)*).unwrap());
}

// The author read the editorial before implementing this solution.
fn solve() {
    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: i64, p: i64,
        a: [i64; n],
    }
    let &ma = a.iter().max().unwrap();
    let lim = m / ma;
    let mut b = a.clone();
    let mut e = vec![0; n];
    const W: usize = 30;
    let mut each = vec![0; W];
    for i in 0..n {
        while b[i] % p == 0 {
            b[i] /= p;
            e[i] += 1;
        }
        each[e[i]].chmax(b[i]);
    }
    if m <= 1 {
        puts!("0\n");
        return;
    }
    if lim <= 0 {
        puts!("1\n");
        return;
    }
    const INF: i64 = 1 << 50;
    let mut dp = vec![-INF; W * W];
    dp[0] = 1;
    for i in 0..W * W {
        if dp[i] > lim {
            break;
        }
        for j in 0..W {
            if each[j] == 0 {
                continue;
            }
            let val = dp[i] * each[j];
            if i + j + 1 < W * W {
                dp[i + j + 1].chmax(val);
            }
        }
    }
    let mut mi = INF;
    for i in 0..W * W {
        if dp[i] > lim {
            mi.chmin(i as i64);
        }
    }
    puts!("{}\n", if mi < INF { mi + 1 } else { -1 });
}

fn main() {
    // In order to avoid potential stack overflow, spawn a new thread.
    let stack_size = 104_857_600; // 100 MB
    let thd = std::thread::Builder::new().stack_size(stack_size);
    thd.spawn(|| solve()).unwrap().join().unwrap();
}