結果
| 問題 |
No.2509 Beam Shateki
|
| コンテスト | |
| ユーザー |
 naut3
|
| 提出日時 | 2023-10-21 15:39:17 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 6,975 bytes |
| コンパイル時間 | 14,617 ms |
| コンパイル使用メモリ | 381,772 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-09-21 16:53:26 |
| 合計ジャッジ時間 | 20,864 ms |
|
ジャッジサーバーID （参考情報） |
judge2 / judge3 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 46 WA * 15 |
コンパイルメッセージ
warning: variable does not need to be mutable
--> src/main.rs:44:21
|
44 | let mut ny = i - 1;
| ----^^
| |
| help: remove this `mut`
|
= note: `#[warn(unused_mut)]` on by default
warning: variable does not need to be mutable
--> src/main.rs:88:21
|
88 | let mut ny = j - 1;
| ----^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:151:21
|
151 | let mut nx = i - 1;
| ----^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:195:21
|
195 | let mut nx = j - 1;
| ----^^
| |
| help: remove this `mut`
ソースコード
#![allow(non_snake_case, unused_imports, unused_must_use)]
use std::io::{self, prelude::*};
use std::str;
fn main() {
let (stdin, stdout) = (io::stdin(), io::stdout());
let mut scan = Scanner::new(stdin.lock());
let mut out = io::BufWriter::new(stdout.lock());
macro_rules! input {
($T: ty) => {
scan.token::<$T>()
};
($T: ty, $N: expr) => {
(0..$N).map(|_| scan.token::<$T>()).collect::<Vec<_>>()
};
}
let H = input!(usize);
let W = input!(usize);
let A = (0..H).map(|_| input!(usize, W)).collect::<Vec<_>>();
let mut ans = 0;
// 横
for i in 0..H + 2 {
for j in i + 1..H + 2 {
let mut seen = vec![vec![false; W]; H];
if i == 0 {
let mut ny = 0;
let mut nx = 0;
loop {
if ny < H && nx < W {
seen[ny][nx] = true;
} else {
break;
}
ny += 1;
nx += 1;
}
} else if 0 < i && i < H + 1 {
let mut ny = i - 1;
let mut nx = 0;
loop {
if ny < H && nx < W {
seen[ny][nx] = true;
} else {
break;
}
nx += 1;
}
} else {
let mut ny = H - 1;
let mut nx = 0;
loop {
if ny < H && nx < W {
seen[ny][nx] = true;
} else {
break;
}
if ny == 0 {
break;
}
ny -= 1;
nx += 1;
}
}
if j == 0 {
let mut ny = 0;
let mut nx = 0;
loop {
if ny < H && nx < W {
seen[ny][nx] = true;
} else {
break;
}
ny += 1;
nx += 1;
}
} else if 0 < j && j < H + 1 {
let mut ny = j - 1;
let mut nx = 0;
loop {
if ny < H && nx < W {
seen[ny][nx] = true;
} else {
break;
}
nx += 1;
}
} else {
let mut ny = H - 1;
let mut nx = 0;
loop {
if ny < H && nx < W {
seen[ny][nx] = true;
} else {
break;
}
if ny == 0 {
break;
}
ny -= 1;
nx += 1;
}
}
let mut score = 0;
for i in 0..H {
for j in 0..W {
if seen[i][j] {
score += A[i][j];
}
}
}
ans = std::cmp::max(ans, score);
}
}
for i in 0..W + 2 {
for j in i + 1..W + 2 {
let mut seen = vec![vec![false; W]; H];
if i == 0 {
let mut ny = 0;
let mut nx = 0;
loop {
if ny < H && nx < W {
seen[ny][nx] = true;
} else {
break;
}
ny += 1;
nx += 1;
}
} else if 0 < i && i < W + 1 {
let mut ny = 0;
let mut nx = i - 1;
loop {
if ny < H && nx < W {
seen[ny][nx] = true;
} else {
break;
}
ny += 1;
}
} else {
let mut ny = 0;
let mut nx = W - 1;
loop {
if ny < H && nx < W {
seen[ny][nx] = true;
} else {
break;
}
if nx == 0 {
break;
}
ny += 1;
nx -= 1;
}
}
if j == 0 {
let mut ny = 0;
let mut nx = 0;
loop {
if ny < H && nx < W {
seen[ny][nx] = true;
} else {
break;
}
ny += 1;
nx += 1;
}
} else if 0 < j && j < W + 1 {
let mut ny = 0;
let mut nx = j - 1;
loop {
if ny < H && nx < W {
seen[ny][nx] = true;
} else {
break;
}
ny += 1;
}
} else {
let mut ny = 0;
let mut nx = W - 1;
loop {
if ny < H && nx < W {
seen[ny][nx] = true;
} else {
break;
}
if nx == 0 {
break;
}
ny += 1;
nx -= 1;
}
}
let mut score = 0;
for i in 0..H {
for j in 0..W {
if seen[i][j] {
score += A[i][j];
}
}
}
ans = std::cmp::max(ans, score);
}
}
writeln!(out, "{}", ans);
}
struct Scanner<R> {
reader: R,
buf_str: Vec<u8>,
buf_iter: str::SplitWhitespace<'static>,
}
impl<R: BufRead> Scanner<R> {
fn new(reader: R) -> Self {
Self {
reader,
buf_str: vec![],
buf_iter: "".split_whitespace(),
}
}
fn token<T: str::FromStr>(&mut self) -> T {
loop {
if let Some(token) = self.buf_iter.next() {
return token.parse().ok().expect("Failed parse");
}
self.buf_str.clear();
self.reader
.read_until(b'\n', &mut self.buf_str)
.expect("Failed read");
self.buf_iter = unsafe {
let slice = str::from_utf8_unchecked(&self.buf_str);
std::mem::transmute(slice.split_whitespace())
}
}
}
}