結果

問題 No.288 貯金箱の仕事
ユーザー koba-e964koba-e964
提出日時 2017-01-10 23:17:18
言語 Rust
(1.77.0 + proconio)
結果
AC  
実行時間 631 ms / 2,000 ms
コード長 2,243 bytes
コンパイル時間 12,823 ms
コンパイル使用メモリ 378,096 KB
実行使用メモリ 492,800 KB
最終ジャッジ日時 2024-05-10 04:02:34
合計ジャッジ時間 24,806 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge5
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 8 ms
8,704 KB
testcase_01 AC 4 ms
5,248 KB
testcase_02 AC 5 ms
5,760 KB
testcase_03 AC 2 ms
5,376 KB
testcase_04 AC 5 ms
5,760 KB
testcase_05 AC 1 ms
5,376 KB
testcase_06 AC 1 ms
5,376 KB
testcase_07 AC 61 ms
51,840 KB
testcase_08 AC 19 ms
17,536 KB
testcase_09 AC 48 ms
41,216 KB
testcase_10 AC 53 ms
44,800 KB
testcase_11 AC 23 ms
20,608 KB
testcase_12 AC 46 ms
40,064 KB
testcase_13 AC 39 ms
33,152 KB
testcase_14 AC 45 ms
39,040 KB
testcase_15 AC 57 ms
48,000 KB
testcase_16 AC 49 ms
41,984 KB
testcase_17 AC 35 ms
31,232 KB
testcase_18 AC 26 ms
22,400 KB
testcase_19 AC 34 ms
28,288 KB
testcase_20 AC 20 ms
18,688 KB
testcase_21 AC 22 ms
20,480 KB
testcase_22 AC 46 ms
39,936 KB
testcase_23 AC 631 ms
492,800 KB
testcase_24 AC 346 ms
247,808 KB
testcase_25 AC 4 ms
5,376 KB
testcase_26 AC 4 ms
5,376 KB
testcase_27 AC 4 ms
5,376 KB
testcase_28 AC 4 ms
5,376 KB
testcase_29 AC 4 ms
5,376 KB
testcase_30 AC 159 ms
127,360 KB
testcase_31 AC 152 ms
127,360 KB
testcase_32 AC 309 ms
249,856 KB
testcase_33 AC 300 ms
249,856 KB
testcase_34 AC 459 ms
372,352 KB
testcase_35 AC 457 ms
372,352 KB
testcase_36 AC 601 ms
492,800 KB
testcase_37 AC 171 ms
141,056 KB
testcase_38 AC 418 ms
340,992 KB
testcase_39 AC 194 ms
164,608 KB
testcase_40 AC 199 ms
169,472 KB
testcase_41 AC 579 ms
471,168 KB
testcase_42 AC 505 ms
409,600 KB
testcase_43 AC 355 ms
288,000 KB
testcase_44 AC 250 ms
201,728 KB
testcase_45 AC 465 ms
378,240 KB
testcase_46 AC 512 ms
414,464 KB
testcase_47 AC 340 ms
274,304 KB
testcase_48 AC 368 ms
299,776 KB
testcase_49 AC 225 ms
181,248 KB
testcase_50 AC 294 ms
237,056 KB
testcase_51 AC 214 ms
171,392 KB
testcase_52 AC 298 ms
242,944 KB
testcase_53 AC 387 ms
316,416 KB
testcase_54 AC 271 ms
219,392 KB
testcase_55 AC 6 ms
5,760 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

#[allow(unused_imports)]
use std::cmp::*;
#[allow(unused_imports)]
use std::collections::*;
use std::io::*;
#[allow(dead_code)]
fn getline() -> String {
    let mut ret = String::new();
    std::io::stdin().read_line(&mut ret).ok();
    return ret;
}
fn get_word() -> String {
    let mut stdin = std::io::stdin();
    let mut u8b: [u8; 1] = [0];
    loop {
        let mut buf: Vec<u8> = Vec::with_capacity(16);
        loop {
            let res = stdin.read(&mut u8b);
            if res.is_err() || res.ok().unwrap() == 0 || u8b[0] <= ' ' as u8 {
                break;
            } else {
                buf.push(u8b[0]);
            }
        }
        if buf.len() >= 1 {
            let ret = std::string::String::from_utf8(buf).unwrap();
            return ret;
        }
    }
}
fn parse<T: std::str::FromStr>(s: &str) -> T { s.parse::<T>().ok().unwrap() }

#[allow(dead_code)]
fn get<T: std::str::FromStr>() -> T { parse(&get_word()) }


fn solve(a: &[i64], v: i64) -> Option<i64> {
    if v < 0 {
        return None;
    }
    let n = a.len();
    const W: usize = 250000;
    const INF: i32 = 0x3fff_ffff;
    let mut dp: Vec<Vec<i32>> = vec![vec![INF; W]; n + 1];
    dp[0][0] = 0;
    for i in 0 .. n {
        let cur = a[i] as usize;
        for j in 0 .. W {
            let mut mi = dp[i][j];
            if j >= cur {
                mi = min(mi, dp[i + 1][j - cur] + 1);
            }
            dp[i + 1][j] = mi;
        }
    }
    if v < W as i64 {
        let tmp = dp[n][v as usize];
        if tmp >= INF {
            return None;
        }
        return Some(tmp as i64);
    }
    let biggest = a[n - 1] as i64;
    let diff = (v + 1 - W as i64 + biggest - 1) / biggest * biggest;
    assert!(v - diff < W as i64);
    let tmp = dp[n][(v - diff) as usize];
    if tmp >= INF {
        return None;
    }
    return Some(tmp as i64 + diff / biggest);
}


fn main() {
    let n: usize = get();
    let m: i64 = get();
    let a: Vec<i64> = (0 .. n).map(|_| get()).collect();
    let k: Vec<i64> = (0 .. n).map(|_| get()).collect();
    let mut diff: i64 = 0;
    for i in 0 .. n {
        diff += a[i] * k[i];
    }
    diff -= m;
    let result = solve(&a, diff);
    println!("{}", result.unwrap_or(-1));
}
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