結果

問題 No.1808 Fullgold Alchemist
ユーザー StrorkisStrorkis
提出日時 2022-01-14 21:59:13
言語 Rust
(1.72.1)
結果
AC  
実行時間 12 ms / 2,000 ms
コード長 6,848 bytes
コンパイル時間 5,838 ms
コンパイル使用メモリ 154,332 KB
実行使用メモリ 4,384 KB
最終ジャッジ日時 2023-08-12 19:31:36
合計ジャッジ時間 3,465 ms
ジャッジサーバーID
(参考情報)
judge12 / judge14
このコードへのチャレンジ(β)

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
4,384 KB
testcase_01 AC 1 ms
4,380 KB
testcase_02 AC 1 ms
4,380 KB
testcase_03 AC 1 ms
4,384 KB
testcase_04 AC 1 ms
4,384 KB
testcase_05 AC 5 ms
4,384 KB
testcase_06 AC 9 ms
4,384 KB
testcase_07 AC 9 ms
4,380 KB
testcase_08 AC 12 ms
4,380 KB
testcase_09 AC 11 ms
4,380 KB
testcase_10 AC 11 ms
4,384 KB
testcase_11 AC 10 ms
4,380 KB
testcase_12 AC 10 ms
4,380 KB
testcase_13 AC 11 ms
4,384 KB
testcase_14 AC 12 ms
4,384 KB
testcase_15 AC 11 ms
4,384 KB
testcase_16 AC 1 ms
4,384 KB
testcase_17 AC 1 ms
4,380 KB
testcase_18 AC 3 ms
4,380 KB
testcase_19 AC 1 ms
4,380 KB
testcase_20 AC 4 ms
4,380 KB
testcase_21 AC 2 ms
4,384 KB
testcase_22 AC 1 ms
4,384 KB
testcase_23 AC 1 ms
4,384 KB
testcase_24 AC 1 ms
4,380 KB
testcase_25 AC 1 ms
4,384 KB
testcase_26 AC 2 ms
4,380 KB
testcase_27 AC 3 ms
4,380 KB
testcase_28 AC 10 ms
4,384 KB
testcase_29 AC 4 ms
4,380 KB
testcase_30 AC 4 ms
4,380 KB
testcase_31 AC 10 ms
4,384 KB
testcase_32 AC 5 ms
4,380 KB
testcase_33 AC 8 ms
4,380 KB
testcase_34 AC 10 ms
4,384 KB
testcase_35 AC 7 ms
4,384 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 #

pub mod input {
    pub trait Readable {
        type Output;

        fn read<R: std::io::BufRead>(r: &mut R) -> Self::Output;
    }

    macro_rules! impl_readable_for_int {
        ($($t:ty)*) => ($(impl Readable for $t {
            type Output = $t;

            #[inline]
            fn read<R: std::io::BufRead>(r: &mut R) -> Self::Output {
                let mut is_positive = true;
                let mut is_empty = true;
                let mut is_only_sign = true;
                let mut result: Self::Output = 0;
                loop {
                    let buf = match r.fill_buf() {
                        Ok(buf) => buf,
                        Err(e) if e.kind() == std::io::ErrorKind::Interrupted => continue,
                        Err(e) => panic!("{}", e), 
                    };
                    let (done, used, mut buf) = match buf.iter().position(u8::is_ascii_whitespace) {
                        Some(i) => (i > 0 || !is_empty, i + 1, &buf[..i]),
                        None => (buf.is_empty(), buf.len(), buf),
                    };
        
                    if is_empty && buf.len() > 0 {
                        is_empty = false;
                        buf = match buf[0] {
                            b'+' => &buf[1..],
                            b'-' => {
                                is_positive = false;
                                &buf[1..]
                            }
                            _ => buf,
                        };
                    }
                    if buf.len() > 0 {
                        is_only_sign = false;
                    }
        
                    if is_positive {
                        for &c in buf {
                            let x = (c as char).to_digit(10).expect("InvalidDigit");
                            result = result.checked_mul(10).expect("PosOverflow");
                            result = result.checked_add(x as $t).expect("PosOverflow");
                        }
                    } else {
                        for &c in buf {
                            let x = (c as char).to_digit(10).expect("InvalidDigit");
                            result = result.checked_mul(10).expect("NegOverflow");
                            result = result.checked_sub(x as $t).expect("NegOverflow");
                        }
                    }
        
                    r.consume(used);
        
                    if done {
                        if is_empty {
                            panic!("Empty");
                        }
                        if is_only_sign {
                            panic!("InvalidDigit");
                        }        
                        return result;
                    }
                }
            }
        })*)
    }
    impl_readable_for_int! { i8 i16 i32 i64 i128 isize u8 u16 u32 u64 u128 usize }

    pub mod marker {
        use super::Readable;
        
        pub enum Usize1 {}

        impl Readable for Usize1 {
            type Output = usize;

            #[inline]
            fn read<R: std::io::BufRead>(r: &mut R) -> Self::Output {
                usize::read(r).checked_sub(1).expect("NegOverflow")
            }
        }

        pub enum Bytes {}

        impl Readable for Bytes {
            type Output = Vec<u8>;

            #[inline]
            fn read<R: std::io::BufRead>(r: &mut R) -> Self::Output {
                let mut result = Vec::new();
                loop {
                    let buf = match r.fill_buf() {
                        Ok(buf) => buf,
                        Err(e) if e.kind() == std::io::ErrorKind::Interrupted => continue,
                        Err(e) => panic!("{}", e), 
                    };
                    let (done, used, buf) = match buf.iter().position(u8::is_ascii_whitespace) {
                        Some(i) => (i > 0 || !result.is_empty(), i + 1, &buf[..i]),
                        None => (buf.is_empty(), buf.len(), buf),
                    };
                    result.extend_from_slice(buf);
                    r.consume(used);
                    if done { return result; }
                }
            }
        }
    }

    impl Readable for String {
        type Output = String;

        #[inline]
        fn read<R: std::io::BufRead>(r: &mut R) -> Self::Output {
            String::from_utf8(marker::Bytes::read(r)).unwrap()
        }
    }

    macro_rules! impl_readable_for_float {
        ($($t:ty)*) => ($(impl Readable for $t {
            type Output = $t;
            
            #[inline]
            fn read<R: std::io::BufRead>(r: &mut R) -> Self::Output {
                String::read(r).parse().unwrap()
            }
        })*)
    }
    impl_readable_for_float! { f32 f64 }

    macro_rules! impl_readable_for_tuple {
        ($head:ident, $($tail:ident),*) => {
            impl<$head, $($tail),*> Readable for ($head, $($tail),*)
            where
                $head: Readable,
                $($tail: Readable),*,
            {
                type Output = (
                    <$head as Readable>::Output,
                    $(<$tail as Readable>::Output),*,
                );

                #[inline]
                fn read<R: std::io::BufRead>(r: &mut R) -> Self::Output {    
                    (<$head>::read(r), $(<$tail>::read(r)),*)
                }
            }
            impl_readable_for_tuple!($($tail),*);
        };
        ($head:ident) => {};
    }
    impl_readable_for_tuple!(A, B, C, D, E, F, G, H, I, J);

    #[macro_export]
    macro_rules! read {
        ($r:expr, [$t:tt; $n:expr]) => {{
            <[_; $n]>::try_from(read!($r, ($t; $n)).as_slice()).unwrap()
        }};
        ($r:expr, ($t:tt)) => {
            read!($r, ($t; read!($r, usize)))
        };
        ($r:expr, ($t:tt; $n:expr)) => {
            (0..$n).map(|_| read!($r, $t)).collect::<Vec<_>>()
        };
        ($r:expr, $t:ty) => {
            <$t>::read($r)
        };
    }

    #[macro_export]
    macro_rules! input {
        ($r:expr, $($($v:ident)* : $t:tt),* $(,)?) => {$(
            let $($v)* = read!($r, $t);
        )*};
    }
}

use input::Readable;

fn run<R: std::io::BufRead, W: std::io::Write>(reader: &mut R, _writer: &mut W) {
    input! {
        reader,
        n: usize, m: u64,
        a: (u64; n),
    }

    let ans = {
        a.iter()
            .enumerate()
            .scan(0, |state, (i, a)| {
                *state = *state + a;
                Some(*state / m / (i + 1) as u64)
            })
            .min()
            .unwrap()
    };
    println!("{}", ans);
}

fn main() {
    let (stdin, stdout) = (std::io::stdin(), std::io::stdout());
    let ref mut reader = std::io::BufReader::new(stdin.lock());
    let ref mut writer = std::io::BufWriter::new(stdout.lock());
    run(reader, writer);
}
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