結果

問題 No.1231 Make a Multiple of Ten
ユーザー tzyvrntzyvrn
提出日時 2020-09-19 16:40:17
言語 Rust
(1.77.0)
結果
AC  
実行時間 13 ms / 2,000 ms
コード長 1,459 bytes
コンパイル時間 657 ms
コンパイル使用メモリ 159,944 KB
実行使用メモリ 5,636 KB
最終ジャッジ日時 2023-09-05 22:05:59
合計ジャッジ時間 1,716 ms
ジャッジサーバーID
(参考情報)
judge13 / judge15
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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
4,380 KB
testcase_01 AC 1 ms
4,380 KB
testcase_02 AC 1 ms
4,380 KB
testcase_03 AC 1 ms
4,380 KB
testcase_04 AC 7 ms
4,380 KB
testcase_05 AC 7 ms
4,376 KB
testcase_06 AC 3 ms
4,380 KB
testcase_07 AC 7 ms
4,376 KB
testcase_08 AC 3 ms
4,380 KB
testcase_09 AC 3 ms
4,376 KB
testcase_10 AC 6 ms
4,380 KB
testcase_11 AC 8 ms
4,380 KB
testcase_12 AC 12 ms
5,224 KB
testcase_13 AC 13 ms
5,592 KB
testcase_14 AC 1 ms
4,380 KB
testcase_15 AC 13 ms
5,636 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: unused import: `std::cmp::min`
 --> Main.rs:1:5
  |
1 | use std::cmp::min;
  |     ^^^^^^^^^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

warning: use of deprecated associated function `core::str::<impl str>::trim_right`: superseded by `trim_end`
  --> Main.rs:10:23
   |
10 |             let s = s.trim_right();
   |                       ^^^^^^^^^^
...
31 |     let n = getl!(usize);
   |             ------------ in this macro invocation
   |
   = note: `#[warn(deprecated)]` on by default
   = note: this warning originates in the macro `getl` (in Nightly builds, run with -Z macro-backtrace for more info)
help: replace the use of the deprecated associated function
   |
10 |             let s = s.trim_end();
   |                       ~~~~~~~~

warning: use of deprecated associated function `core::str::<impl str>::trim_right`: superseded by `trim_end`
  --> Main.rs:22:19
   |
22 |         let s = s.trim_right();
   |                   ^^^^^^^^^^
...
32 |     let a = getl_vec!(usize);
   |             ---------------- in this macro invocation
   |
   = note: this warning originates in the macro `getl_vec` (in Nightly builds, run with -Z macro-backtrace for more info)
help: replace the use of the deprecated associated function
   |
22 |         let s = s.trim_end();
   |                   ~~~~~~~~

warning: 3 warnings emitted

ソースコード

diff #

use std::cmp::min;

//{{{
#[allow(unused_macros)]
macro_rules! getl {
    ( $( $t:ty ),* ) => {
        {
            let mut s = String::new();
            std::io::stdin().read_line(&mut s).unwrap();
            let s = s.trim_right();
            let mut ws = s.split_whitespace();
            ($(ws.next().unwrap().parse::<$t>().unwrap()),*)
        }
    };
}

#[allow(unused_macros)]
macro_rules! getl_vec {
    ( $t:ty ) => {{
        let mut s = String::new();
        std::io::stdin().read_line(&mut s).unwrap();
        let s = s.trim_right();
        s.split_whitespace()
            .map(|x| x.parse().unwrap())
            .collect::<Vec<$t>>()
    }};
}
//}}}

fn main() {
    let n = getl!(usize);
    let a = getl_vec!(usize);

    let mut cnt = vec![0usize; 10];
    for ai in a.iter().copied() {
        cnt[ai % 10] += 1;
    }

    let mut s = 0;
    for ai in a.iter().copied() {
        s += ai;
        s = s % 10;
    }
    let r = dfs(1, 0, 0, s, &cnt);
    println!("{}", n - r);
}

fn dfs(m: usize, c: usize, now: usize, t: usize, cnt: &Vec<usize>) -> usize {
    if m > 9 {
        return 100;
    }

    let mut ret = 100;
    for i in 0..=9 {
        if i > cnt[m] || c + i > 10 {
            break;
        }
        let now = (now + m * i) % 10;
        if now == t {
            ret = std::cmp::min(ret, c + i);
        } else {
            ret = std::cmp::min(ret, dfs(m + 1, c + i, now, t, cnt));
        }
    }

    ret
}
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