結果

問題 No.944 煎っぞ!
ユーザー manta1130manta1130
提出日時 2019-12-07 20:49:14
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 862 ms / 3,000 ms
コード長 3,848 bytes
コンパイル時間 20,867 ms
コンパイル使用メモリ 377,112 KB
実行使用メモリ 5,248 KB
最終ジャッジ日時 2024-12-26 07:36:32
合計ジャッジ時間 24,857 ms
ジャッジサーバーID
(参考情報)
judge1 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
other AC * 35
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: variable `n` is assigned to, but never used
   --> src/main.rs:112:9
    |
112 |     let n: usize;
    |         ^
    |
    = note: consider using `_n` instead
    = note: `#[warn(unused_variables)]` on by default

warning: value assigned to `n` is never read
   --> src/main.rs:113:12
    |
113 |     input!(n);
    |            ^
    |
    = help: maybe it is overwritten before being read?
    = note: `#[warn(unused_assignments)]` on by default

ソースコード

diff #

//  ____            _                  _                       _       _
// |  _ \ _   _ ___| |_    ___ _ __   | |_ ___ _ __ ___  _ __ | | __ _| |_ ___
// | |_) | | | / __| __|  / __| '_ \  | __/ _ \ '_ ` _ \| '_ \| |/ _` | __/ _ \
// |  _ <| |_| \__ \ |_  | (__| |_) | | ||  __/ | | | | | |_) | | (_| | ||  __/
// |_| \_\\__,_|___/\__|  \___| .__/___\__\___|_| |_| |_| .__/|_|\__,_|\__\___|
//                            |_| |_____|               |_|

//https://github.com/manta1130/Competitive_Programming_Template_Rust

#[macro_use]
mod input {

    use std;
    use std::io;

    const SPLIT_DELIMITER: char = ' ';

    #[macro_export]
    #[allow(unused_macros)]
    macro_rules! input {
    ( $($x:expr ),*) => {
        {
            let temp_str = input_line_str();
            let mut split_result_iter = temp_str.split_whitespace();
                $(
                let buf_split_result = split_result_iter.next();
                let buf_split_result = buf_split_result.unwrap();
                    ($x) = buf_split_result.parse().unwrap();
                )*
        }
    };
}

    #[allow(dead_code)]
    pub fn input_line_str() -> String {
        let mut s = String::new();
        io::stdin().read_line(&mut s).unwrap();
        s.trim().to_string()
    }

    #[allow(dead_code)]
    pub fn p<T>(t: T)
    where
        T: std::fmt::Display,
    {
        println!("{}", t);
    }

    #[allow(dead_code)]
    pub fn input_vector2d<T>(line: usize) -> Vec<Vec<T>>
    where
        T: std::str::FromStr,
    {
        let mut v: Vec<Vec<T>> = Vec::new();

        for _ in 0..line {
            let vec_line = input_vector();
            v.push(vec_line);
        }
        v
    }

    #[allow(dead_code)]
    pub fn input_vector<T>() -> Vec<T>
    where
        T: std::str::FromStr,
    {
        let mut v: Vec<T> = Vec::new();

        let s = input_line_str();
        let split_result = s.split(SPLIT_DELIMITER);
        for z in split_result {
            let buf = match z.parse() {
                Ok(r) => r,
                Err(_) => panic!("Parse Error"),
            };
            v.push(buf);
        }
        v
    }

    #[allow(dead_code)]
    pub fn input_vector_row<T>(n: usize) -> Vec<T>
    where
        T: std::str::FromStr,
    {
        let mut v = Vec::with_capacity(n);
        for _ in 0..n {
            let buf = match input_line_str().parse() {
                Ok(r) => r,
                Err(_) => panic!("Parse Error"),
            };
            v.push(buf);
        }
        v
    }

    pub trait ToCharVec {
        fn to_charvec(&self) -> Vec<char>;
    }

    impl ToCharVec for String {
        fn to_charvec(&self) -> Vec<char> {
            self.to_string().chars().collect::<Vec<_>>()
        }
    }
}

use input::*;

fn main() {
    let n: usize;
    input!(n);
    let a = input_vector::<usize>();
    let mut sum = 0;
    let mut v = vec![];

    for z in a {
        sum += z;
        v.push(sum);
    }

    let mut ans = 0;
    let mut i = 0;
    while i * i <= sum {
        i += 1;
        if sum % i != 0 {
            continue;
        }

        let mut j = i;
        let mut count = 0;
        let mut flag = true;
        while j <= sum {
            if let Ok(_) = v.binary_search(&j) {
                count += 1;
            } else {
                flag = false;
            }
            j += i;
        }
        if flag {
            ans = std::cmp::max(ans, count);
        }
        let mut j = sum / i;
        let mut count = 0;
        let mut flag = true;
        while j <= sum {
            if let Ok(_) = v.binary_search(&j) {
                count += 1;
            } else {
                flag = false;
            }
            j += sum / i;
        }

        if flag {
            ans = std::cmp::max(ans, count);
        }
    }
    p(ans);
}
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