結果
問題 | No.2608 Divide into two |
ユーザー |
![]() |
提出日時 | 2024-01-19 21:39:45 |
言語 | Rust (1.83.0 + proconio) |
結果 |
AC
|
実行時間 | 139 ms / 1,000 ms |
コード長 | 2,833 bytes |
コンパイル時間 | 11,585 ms |
コンパイル使用メモリ | 378,856 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-09-28 04:11:22 |
合計ジャッジ時間 | 12,595 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 2 |
ソースコード
#![allow(non_snake_case, unused_imports, unused_must_use)]use std::io::{self, prelude::*, BufWriter, StdinLock, StdoutLock};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::<$T>()).collect::<Vec<_>>()};}let t = input!(usize);for _ in 0..t {solve(&mut scan, &mut out);}}fn solve(scan: &mut Scanner<StdinLock>, out: &mut BufWriter<StdoutLock>) {macro_rules! input {($T: ty) => {scan.token::<$T>()};($T: ty, $N: expr) => {(0..$N).map(|_| scan.token::<$T>()).collect::<Vec<_>>()};}let N = input!(usize);let mut dp = vec![vec![false; (N * (N + 1) / 2) + 1]; N + 1];dp[0][0] = true;for i in 0..N {let d = i + 1;for j in 0..=(N * (N + 1)) / 2 {if dp[i][j] && j + d <= (N * (N + 1)) / 2 {dp[i + 1][j + d] = true;}if dp[i][j] {dp[i + 1][j] = true;}}}let s = N * (N + 1) / 2;if s % 2 == 0 {let mut ans = vec![false; N + 1];let mut now = s / 2;for i in (1..=N).rev() {if now >= i && dp[i][now] && dp[i - 1][now - i] {now -= i;ans[i] = true;}}ans.remove(0);if now == 0 {writeln!(out,"{}",ans.iter().map(|&x| if x { "1" } else { "0" }).collect::<Vec<_>>().join(""));} else {writeln!(out, "-1");}} else {writeln!(out, "-1");}}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())}}}}