#921146 (Rust) No.2509 Beam Shateki

• 問題: No.2509 Beam Shateki
• ユーザー: Moss_Local
• 提出日時: 2023-10-20 22:03:05
• 言語: Rust (1.83.0 + proconio)
• 結果: AC
• 実行時間: 1,469 ms / 2,000 ms
• コード長: 6,927 bytes
• コンパイル時間: 15,193 ms
• コンパイル使用メモリ: 384,628 KB
• 実行使用メモリ: 6,944 KB
• 最終ジャッジ日時: 2024-09-20 19:02:43
• 合計ジャッジ時間: 51,738 ms
• ジャッジサーバーID （参考情報）: judge4 / judge1

ファイルパターン	結果
sample	AC * 3
other	AC * 61

ソースコード

// -*- coding:utf-8-unix -*-
// #![feature(map_first_last)]
#![allow(dead_code)]
#![allow(unused_imports)]
#![allow(unused_macros)]
// use core::num;
use std::cmp::*;
use std::fmt::*;
use std::hash::*;
use std::iter::FromIterator;
use std::*;
use std::{cmp, collections, fmt, io, iter, ops, str};
const INF: i64 = 1223372036854775807;
const UINF: usize = INF as usize;
const LINF: i64 = 2147483647;
const INF128: i128 = 1223372036854775807000000000000;
const MOD1: i64 = 1000000007;
const MOD9: i64 = 998244353;
const MOD: i64 = MOD9;
// const MOD: i64 = MOD2;
const UMOD: usize = MOD as usize;
const M_PI: f64 = 3.14159265358979323846;

// use proconio::input;
// const MOD: i64 = INF;

use cmp::Ordering::*;
use std::collections::*;

use std::io::stdin;
use std::io::stdout;
use std::io::Write;

macro_rules! p {
    ($x:expr) => {
        //if expr
        println!("{}", $x);
    };
}

macro_rules! vp {
    // vector print separate with space
    ($x:expr) => {
        println!(
            "{}",
            $x.iter()
                .map(|x| x.to_string())
                .collect::<Vec<_>>()
                .join(" ")
        );
    };
}

macro_rules! d {
    ($x:expr) => {
        eprintln!("{:?}", $x);
    };
}
macro_rules! yn {
    ($val:expr) => {
        if $val {
            println!("Yes");
        } else {
            println!("No");
        }
    };
}

fn main() {
    solve();
}

// use str::Chars;
#[allow(dead_code)]
fn read<T: std::str::FromStr>() -> T {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim().parse().ok().unwrap()
}

#[allow(dead_code)]
fn read_vec<T: std::str::FromStr>() -> Vec<T> {
    read::<String>()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}

#[allow(dead_code)]
fn read_mat<T: std::str::FromStr>(n: u32) -> Vec<Vec<T>> {
    (0..n).map(|_| read_vec()).collect()
}

#[allow(dead_code)]
fn readii() -> (i64, i64) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<i64>().unwrap(),
        iter.next().unwrap().parse::<i64>().unwrap(),
    )
}

#[allow(dead_code)]
fn readiii() -> (i64, i64, i64) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<i64>().unwrap(),
        iter.next().unwrap().parse::<i64>().unwrap(),
        iter.next().unwrap().parse::<i64>().unwrap(),
    )
}
#[allow(dead_code)]
fn readuu() -> (usize, usize) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<usize>().unwrap(),
        iter.next().unwrap().parse::<usize>().unwrap(),
    )
}

#[allow(dead_code)]
fn readff() -> (f64, f64) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<f64>().unwrap(),
        iter.next().unwrap().parse::<f64>().unwrap(),
    )
}

fn readcc() -> (char, char) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<char>().unwrap(),
        iter.next().unwrap().parse::<char>().unwrap(),
    )
}

fn readuuu() -> (usize, usize, usize) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<usize>().unwrap(),
        iter.next().unwrap().parse::<usize>().unwrap(),
        iter.next().unwrap().parse::<usize>().unwrap(),
    )
}
#[allow(dead_code)]
fn readiiii() -> (i64, i64, i64, i64) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<i64>().unwrap(),
        iter.next().unwrap().parse::<i64>().unwrap(),
        iter.next().unwrap().parse::<i64>().unwrap(),
        iter.next().unwrap().parse::<i64>().unwrap(),
    )
}

#[allow(dead_code)]
fn readuuuu() -> (usize, usize, usize, usize) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<usize>().unwrap(),
        iter.next().unwrap().parse::<usize>().unwrap(),
        iter.next().unwrap().parse::<usize>().unwrap(),
        iter.next().unwrap().parse::<usize>().unwrap(),
    )
}

fn readimat(h: usize, w: usize) -> Vec<Vec<i64>> {
    let mut mat = vec![vec![0; w]; h];
    for i in 0..h {
        let mut str = String::new();
        let _ = stdin().read_line(&mut str).unwrap();
        let mut iter = str.split_whitespace();
        for j in 0..w {
            mat[i][j] = iter.next().unwrap().parse::<i64>().unwrap();
        }
    }
    mat
}

fn readcmat(h: usize, w: usize) -> Vec<Vec<char>> {
    let mut mat = vec![vec!['.'; w]; h];
    for i in 0..h {
        let mut str = String::new();
        let _ = stdin().read_line(&mut str).unwrap();
        let mut iter = str.chars();
        for j in 0..w {
            mat[i][j] = iter.next().unwrap();
        }
    }
    mat
}

fn solve() {
    let (h, w) = readuu();
    let mat = readimat(h, w);
    let mut cand = vec![];
    for i in 0..h {
        let mut c = vec![];
        for j in 0..w {
            c.push((i, j));
        }
        cand.push(c);
    }
    for j in 0..w {
        let mut c = vec![];
        for i in 0..h {
            c.push((i, j));
        }
        cand.push(c);
    }
    for i in 0..=(h + w - 2) {
        let mut c = vec![];
        for j in 0..=i {
            if j >= h || i - j >= w {
                continue;
            }
            c.push((j, i - j));
        }
        cand.push(c);
    }
    for i in 0..h {
        let mut pi = i;
        let mut pj = 0;
        let mut c = vec![];
        while pi < h && pj < w {
            c.push((pi, pj));
            pi += 1;
            pj += 1;
        }
        cand.push(c);
    }
    for i in 0..w {
        let mut pi = 0;
        let mut pj = i;
        let mut c = vec![];
        while pi < h && pj < w {
            c.push((pi, pj));
            pi += 1;
            pj += 1;
        }
        cand.push(c);
    }

    let mut res = 0;
    for i in 0..cand.len() {
        for j in i + 1..cand.len() {
            let mut set = BTreeSet::new();
            for k in 0..cand[i].len() {
                set.insert(cand[i][k]);
            }
            for k in 0..cand[j].len() {
                set.insert(cand[j][k]);
            }
            let mut sum = 0;
            for s in set {
                sum += mat[s.0][s.1];
            }
            res = max(res, sum);
        }
    }
    p!(res);
    return;
}