#681895 (Rust) No.1618 Convolution?

• 問題: No.1618 Convolution?
• ユーザー: Rheo Tommy
• 提出日時: 2021-07-22 22:28:47
• 言語: Rust (1.83.0 + proconio)
• 結果: AC
• 実行時間: 44 ms / 2,000 ms
• コード長: 3,791 bytes
• コンパイル時間: 12,155 ms
• コンパイル使用メモリ: 404,600 KB
• 実行使用メモリ: 10,920 KB
• 最終ジャッジ日時: 2024-07-17 18:36:08
• 合計ジャッジ時間: 16,927 ms
• ジャッジサーバーID （参考情報）: judge4 / judge2

ファイルパターン	結果
sample	AC * 2
other	AC * 15

ソースコード

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#![allow(unused_macros)]
#![allow(dead_code)]
#![allow(unused_imports)]
// # ファイル構成
// - use 宣言
// - lib モジュール
// - main 関数
// - basic モジュール
//
// 常に使うテンプレートライブラリは basic モジュール内にあります。
// 問題に応じて使うライブラリ lib モジュール内にコピペしています。
// ライブラリのコードはこちら → https://github.com/RheoTommy/at_coder
// Twitter はこちら → https://twitter.com/RheoTommy
use std::collections::*;
use std::io::{stdout, BufWriter, Write};
use crate::basic::*;
use crate::lib::*;
pub mod lib {}
fn main() {
    let mut io = IO::new();
    let n = io.next_usize();
    let a = io.next_vec::<i64>(n);
    let b = io.next_vec::<i64>(n);
    let mut c = vec![0; 2 * n];
    let mut diff = 0;
    for i in 1..2 * n {
        if i <= n {
            diff += a[i - 1];
            diff += b[i - 1];
        } else {
            diff -= a[i - n - 1];
            diff -= b[i - n - 1];
            c[i] -= (a[i - n - 1] + b[i - n - 1]) * n as i64;
        }
        // eprintln!("{:?}", diff);
        c[i] += c[i - 1] + diff;
    }
    io.print_iter(c.iter(), " ");
}
pub mod basic {
    pub const U_INF: u64 = (1 << 60) + (1 << 30);
    pub const I_INF: i64 = (1 << 60) + (1 << 30);
    pub struct IO {
        iter: std::str::SplitAsciiWhitespace<'static>,
        buf: std::io::BufWriter<std::io::StdoutLock<'static>>,
    }
    impl Default for IO {
        fn default() -> Self {
            Self::new()
        }
    }
    impl IO {
        pub fn new() -> Self {
            use std::io::*;
            let mut input = String::new();
            std::io::stdin().read_to_string(&mut input).unwrap();
            let input = Box::leak(input.into_boxed_str());
            let out = Box::new(stdout());
            IO {
                iter: input.split_ascii_whitespace(),
                buf: BufWriter::new(Box::leak(out).lock()),
            }
        }
        pub fn next_str(&mut self) -> &str {
            self.iter.next().unwrap()
        }
        pub fn read<T: std::str::FromStr>(&mut self) -> T
            where
                <T as std::str::FromStr>::Err: std::fmt::Debug,
        {
            self.iter.next().unwrap().parse().unwrap()
        }
        pub fn next_usize(&mut self) -> usize {
            self.read()
        }
        pub fn next_uint(&mut self) -> u64 {
            self.read()
        }
        pub fn next_int(&mut self) -> i64 {
            self.read()
        }
        pub fn next_float(&mut self) -> f64 {
            self.read()
        }
        pub fn next_chars(&mut self) -> std::str::Chars {
            self.next_str().chars()
        }
        pub fn next_vec<T: std::str::FromStr>(&mut self, n: usize) -> Vec<T>
            where
                <T as std::str::FromStr>::Err: std::fmt::Debug,
        {
            (0..n).map(|_| self.read()).collect::<Vec<_>>()
        }
        pub fn print<T: std::fmt::Display>(&mut self, t: T) {
            use std::io::Write;
            write!(self.buf, "{}", t).unwrap();
        }
        pub fn println<T: std::fmt::Display>(&mut self, t: T) {
            self.print(t);
            self.print("\n");
        }
        pub fn print_iter<T: std::fmt::Display, I: Iterator<Item=T>>(
            &mut self,
            mut iter: I,
            sep: &str,
        ) {
            if let Some(v) = iter.next() {
                self.print(v);
                for vi in iter {
                    self.print(sep);
                    self.print(vi);
                }
            }
            self.print("\n");
        }
        pub fn flush(&mut self) {
            use std::io::Write;
            self.buf.flush().unwrap();
        }
    }
}
 
 
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