結果

問題 No.1340 おーじ君をさがせ
ユーザー ziita
提出日時 2021-02-22 01:57:00
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 245 ms / 2,000 ms
コード長 4,724 bytes
コンパイル時間 13,001 ms
コンパイル使用メモリ 402,068 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-09-19 21:59:11
合計ジャッジ時間 17,743 ms
ジャッジサーバーID
(参考情報)
judge2 / judge1
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 59
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#![allow(unused_imports)]
#![allow(non_snake_case, unused)]
use std::cmp::*;
use std::collections::*;
use std::ops::*;
// https://atcoder.jp/contests/hokudai-hitachi2019-1/submissions/10518254
macro_rules! eprint {
($($t:tt)*) => {{
use ::std::io::Write;
let _ = write!(::std::io::stderr(), $($t)*);
}};
}
macro_rules! eprintln {
() => { eprintln!(""); };
($($t:tt)*) => {{
use ::std::io::Write;
let _ = writeln!(::std::io::stderr(), $($t)*);
}};
}
macro_rules! dbg {
($v:expr) => {{
let val = $v;
eprintln!("[{}:{}] {} = {:?}", file!(), line!(), stringify!($v), val);
val
}}
}
macro_rules! mat {
($($e:expr),*) => { Vec::from(vec![$($e),*]) };
($($e:expr,)*) => { Vec::from(vec![$($e),*]) };
($e:expr; $d:expr) => { Vec::from(vec![$e; $d]) };
($e:expr; $d:expr $(; $ds:expr)+) => { Vec::from(vec![mat![$e $(; $ds)*]; $d]) };
}
macro_rules! ok {
($a:ident$([$i:expr])*.$f:ident()$(@$t:ident)*) => {
$a$([$i])*.$f($($t),*)
};
($a:ident$([$i:expr])*.$f:ident($e:expr$(,$es:expr)*)$(@$t:ident)*) => { {
let t = $e;
ok!($a$([$i])*.$f($($es),*)$(@$t)*@t)
} };
}
pub fn readln() -> String {
let mut line = String::new();
::std::io::stdin().read_line(&mut line).unwrap_or_else(|e| panic!("{}", e));
line
}
macro_rules! read {
($($t:tt),*; $n:expr) => {{
let stdin = ::std::io::stdin();
let ret = ::std::io::BufRead::lines(stdin.lock()).take($n).map(|line| {
let line = line.unwrap();
let mut it = line.split_whitespace();
_read!(it; $($t),*)
}).collect::<Vec<_>>();
ret
}};
($($t:tt),*) => {{
let line = readln();
let mut it = line.split_whitespace();
_read!(it; $($t),*)
}};
}
macro_rules! _read {
($it:ident; [char]) => {
_read!($it; String).chars().collect::<Vec<_>>()
};
($it:ident; [u8]) => {
Vec::from(_read!($it; String).into_bytes())
};
($it:ident; usize1) => {
$it.next().unwrap_or_else(|| panic!("input mismatch")).parse::<usize>().unwrap_or_else(|e| panic!("{}", e)) - 1
};
($it:ident; [usize1]) => {
$it.map(|s| s.parse::<usize>().unwrap_or_else(|e| panic!("{}", e)) - 1).collect::<Vec<_>>()
};
($it:ident; [$t:ty]) => {
$it.map(|s| s.parse::<$t>().unwrap_or_else(|e| panic!("{}", e))).collect::<Vec<_>>()
};
($it:ident; $t:ty) => {
$it.next().unwrap_or_else(|| panic!("input mismatch")).parse::<$t>().unwrap_or_else(|e| panic!("{}", e))
};
($it:ident; $($t:tt),+) => {
($(_read!($it; $t)),*)
};
}
pub fn main() {
let _ = ::std::thread::Builder::new().name("run".to_string()).stack_size(32 * 1024 * 1024).spawn(run).unwrap().join();
}
const MOD: usize = 998244353;
// const MOD: usize = 1_000_000_007;
// const INF: i64 = std::i64::MAX;
const INF: usize = std::usize::MAX;
// const INF: i128 = std::i128::MAX/100;
fn solve() {
let (n,m,t) = read!(usize,usize,i64);
let ab = read!(usize,usize;m);
let mut edge = vec![vec![];n];
for &(a,b) in &ab {
edge[a].push(b);
}
let mut mt = 10000;
let mut list = vec![vec![false;mt+1];n];
let mut q = VecDeque::new();
q.push_back((0,0));
while let Some((cur,t)) = q.pop_front() {
list[cur][t] = true;
if t==mt {
continue;
}
for &e in &edge[cur] {
if list[e][t+1] {
continue;
}
q.push_back((e,t+1));
list[e][t+1] = true;
}
}
let mut ans = 0;
for i in 0..n {
if t <= mt as i64{
if list[i][t as usize] {
ans += 1;
}
continue;
}
let mut exist = false;
for j in 0..=100 {
if !list[i][j] {
continue;
}
for s in 1..=100 {
let mut idx = j;
let mut flag = true;
loop {
idx += s;
if !list[i][idx] {
flag = false;
break;
}
if idx>=1000 {
break;
}
}
if flag {
if j%s == (t%s as i64) as usize{
exist = true;
}
}
}
}
if exist {
ans += 1;
}
}
println!("{}",ans);
}
fn run() {
let stack_size = 104_857_600; // 100 MB
let thd = std::thread::Builder::new().stack_size(stack_size);
solve();
}
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