#604033 (Rust) No.1338 Giant Class

• 問題: No.1338 Giant Class
• ユーザー: cympfh
• 提出日時: 2021-01-15 21:51:14
• 言語: Rust (1.83.0 + proconio)
• 結果: WA
• 実行時間: -
• コード長: 3,733 bytes
• コンパイル時間: 22,683 ms
• コンパイル使用メモリ: 377,156 KB
• 実行使用メモリ: 5,448 KB
• 最終ジャッジ日時: 2024-11-26 14:12:43
• 合計ジャッジ時間: 26,608 ms
• ジャッジサーバーID （参考情報）: judge1 / judge2

ファイルパターン	結果
sample	AC * 1 WA * 1
other	AC * 17 WA * 4

ソースコード

#![allow(unused_imports, unused_macros, dead_code)]
use std::{cmp::*, collections::*};

fn main() {
    let mut sc = Scanner::new();
    let h: u64 = sc.cin();
    let w: u64 = sc.cin();

    let mut ans = h * w;
    let mut memo = DefaultDict::new(h);

    let q: usize = sc.cin();
    for _ in 0..q {
        let x: u64 = sc.cin();
        let y: usize = sc.cin();

        if memo[y] > x {
            ans -= memo[y] - x + 1;
            memo[y] = x - 1;
        }
        put!(ans);
    }
}

// @collections/defaultdict
#[derive(Debug, Clone)]
pub struct DefaultDict<K, V>
where
    K: Eq + std::hash::Hash,
{
    data: std::collections::HashMap<K, V>,
    default: V,
}
impl<K: Eq + std::hash::Hash, V> DefaultDict<K, V> {
    pub fn new(default: V) -> DefaultDict<K, V> {
        DefaultDict {
            data: std::collections::HashMap::new(),
            default,
        }
    }
    pub fn keys(&self) -> std::collections::hash_map::Keys<K, V> {
        self.data.keys()
    }
    pub fn iter(&self) -> std::collections::hash_map::Iter<K, V> {
        self.data.iter()
    }
    pub fn len(&self) -> usize {
        self.data.len()
    }
}
impl<K: Eq + std::hash::Hash, V> std::ops::Index<K> for DefaultDict<K, V> {
    type Output = V;
    fn index(&self, key: K) -> &Self::Output {
        if let Some(val) = self.data.get(&key) {
            val
        } else {
            &self.default
        }
    }
}
impl<K: Eq + std::hash::Hash + Clone, V: Clone> std::ops::IndexMut<K> for DefaultDict<K, V> {
    fn index_mut(&mut self, key: K) -> &mut Self::Output {
        let val = self.default.clone();
        self.data.entry(key.clone()).or_insert(val);
        self.data.get_mut(&key).unwrap()
    }
}

// {{{
use std::io::{self, Write};
use std::str::FromStr;

struct Scanner {
    stdin: io::Stdin,
    buffer: VecDeque<String>,
}
impl Scanner {
    fn new() -> Self {
        Self {
            stdin: io::stdin(),
            buffer: VecDeque::new(),
        }
    }
    fn cin<T: FromStr>(&mut self) -> T {
        while self.buffer.is_empty() {
            let mut line = String::new();
            let _ = self.stdin.read_line(&mut line);
            for w in line.split_whitespace() {
                self.buffer.push_back(String::from(w));
            }
        }
        self.buffer.pop_front().unwrap().parse::<T>().ok().unwrap()
    }
    fn chars(&mut self) -> Vec<char> {
        self.cin::<String>().chars().collect()
    }
    fn vec<T: FromStr>(&mut self, n: usize) -> Vec<T> {
        (0..n).map(|_| self.cin()).collect()
    }
}
fn flush() {
    std::io::stdout().flush().unwrap();
}
#[macro_export]
macro_rules! min {
    (.. $x:expr) => {{
        let mut it = $x.iter();
        it.next().map(|z| it.fold(z, |x, y| min!(x, y)))
    }};
    ($x:expr) => ($x);
    ($x:expr, $($ys:expr),*) => {{
        let t = min!($($ys),*);
        if $x < t { $x } else { t }
    }}
}
#[macro_export]
macro_rules! max {
    (.. $x:expr) => {{
        let mut it = $x.iter();
        it.next().map(|z| it.fold(z, |x, y| max!(x, y)))
    }};
    ($x:expr) => ($x);
    ($x:expr, $($ys:expr),*) => {{
        let t = max!($($ys),*);
        if $x > t { $x } else { t }
    }}
}
#[macro_export]
macro_rules! trace {
    ($x:expr) => {
        #[cfg(debug_assertions)]
        eprintln!(">>> {} = {:?}", stringify!($x), $x)
    };
    ($($xs:expr),*) => { trace!(($($xs),*)) }
}
#[macro_export]
macro_rules! put {
    (.. $x:expr) => {{
        let mut it = $x.iter();
        if let Some(x) = it.next() { print!("{}", x); }
        for x in it { print!(" {}", x); }
        println!("");
    }};
    ($x:expr) => { println!("{}", $x) };
    ($x:expr, $($xs:expr),*) => { print!("{} ", $x); put!($($xs),*) }
}
// }}}