結果
| 問題 |
No.95 Alice and Graph
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2021-02-12 20:28:00 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
AC
|
| 実行時間 | 2,639 ms / 5,000 ms |
| コード長 | 5,566 bytes |
| コンパイル時間 | 16,078 ms |
| コンパイル使用メモリ | 378,184 KB |
| 実行使用メモリ | 8,640 KB |
| 最終ジャッジ日時 | 2024-12-05 18:34:36 |
| 合計ジャッジ時間 | 28,328 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 14 |
ソースコード
// #[allow(unused_macros)]
// macro_rules! input {
// (@read $io:tt @rest) => {};
// (@read $io:tt @rest mut $($rest:tt)*) => {
// input!(@read $io @mut [mut] @rest $($rest)*)
// };
// (@read $io:tt @rest $($rest:tt)*) => {
// input!(@read $io @mut [] @rest $($rest)*)
// };
// (@read $io:tt @mut [$($mut:tt)?] @rest $var:tt: $($rest:tt)*) => {
// input!(@read $io @mut[$($mut)*] @var $var @kind [] @rest $($rest)*)
// };
// (@read $io:tt @mut [$($mut:tt)?] @var $var:tt @kind [$($kind:tt)*] @rest) => {
// let $($mut)* $var = input!(@kind $io:tt $($kind)*);
// };
// (@read $io:tt @mut [$($mut:tt)?] @var $var:tt @kind [$($kind:tt)*] @rest, $($rest:tt)*) => {
// input!(@read $io @mut [$($mut)*] @var $var @kind [$($kind)*] @rest);
// input!(@read $io @rest $($rest)*);
// };
// (@read $io:tt @mut [$($mut:tt)?] @var $var:tt @kind [$($kind:tt)*] @rest $tt:tt $($rest:tt)*) => {
// input!(@read $io @mut [$($mut)*] @var $var @kind [$($kind)* $tt] @rest $($rest)*);
// };
// (@kind $io:tt [$kind:tt; $len:tt]) => {
// io.scan_vec::<$kind>($len);
// };
// (@kind $io:tt $kind:tt) => {
// io.scan::<$kind>();
// };
// ($($rest:tt)*) => {
// let mut io = IO::new();
// input!(@read io @rest $($rest)*)
// };
// }
fn main() {
// input!{
// n: usize, _m: usize, k: i32,
// ed: [(usize, usize); _m],
// }
let mut io = IO::new();
let (n, _m, k) = io.scan();
let ed = io.scan_vec::<(usize, usize)>(_m);
let mut d = vec![vec![k+1; n]; n];
for i in 0..n {
d[i][i] = 0;
}
for &(u, v) in &ed {
d[u-1][v-1] = 1;
d[v-1][u-1] = 1;
}
for v in 0..n {
for u in 0..n {
for w in 0..n {
d[u][w] = std::cmp::min(d[u][w], d[u][v] + d[v][w]);
}
}
}
let mut vis = Vec::new();
for i in (1..n).rev() {
vis.push(i);
let m = vis.len();
let mut dp = vec![vec![k+1; m]; 1<<m];
for j in 0..m {
dp[1<<j][j] = d[0][vis[j]];
}
for bit in 1..1<<m {
for j in 0..m {
if bit & (1 << j) == 0 { continue; }
if dp[bit][j] > k { continue; }
for jj in 0..m {
if bit & (1 << jj) == 0 {
dp[bit | 1 << jj][jj] = std::cmp::min(
dp[bit | 1 << jj][jj], dp[bit][j] + d[vis[j]][vis[jj]]
);
}
}
}
}
let goal = (1 << m) - 1;
if (0..m).all(|j| dp[goal][j] > k) {
vis.pop();
}
}
println!("{}", vis.iter().map(|i| (1i64 << i) - 1).sum::<i64>());
}
// ------------ io module start ------------
use std::io::{stdout, BufWriter, Read, StdoutLock, Write};
pub struct IO {
iter: std::str::SplitAsciiWhitespace<'static>,
buf: BufWriter<StdoutLock<'static>>,
}
impl IO {
pub fn new() -> Self {
let mut input = String::new();
std::io::stdin().read_to_string(&mut input).unwrap();
let input = Box::leak(input.into_boxed_str());
let out = Box::new(stdout());
IO {
iter: input.split_ascii_whitespace(),
buf: BufWriter::new(Box::leak(out).lock()),
}
}
fn scan_str(&mut self) -> &'static str {
self.iter.next().unwrap()
}
fn scan_raw(&mut self) -> &'static [u8] {
self.scan_str().as_bytes()
}
pub fn scan<T: Scan>(&mut self) -> T {
T::scan(self)
}
pub fn scan_vec<T: Scan>(&mut self, n: usize) -> Vec<T> {
(0..n).map(|_| self.scan()).collect()
}
}
impl IO {
pub fn print<T: Print>(&mut self, x: T) {
T::print(self, x);
}
pub fn println<T: Print>(&mut self, x: T) {
self.print(x);
self.print("\n");
}
pub fn iterln<T: Print, I: Iterator<Item = T>>(&mut self, mut iter: I, delim: &str) {
if let Some(v) = iter.next() {
self.print(v);
for v in iter {
self.print(delim);
self.print(v);
}
}
self.print("\n");
}
pub fn flush(&mut self) {
self.buf.flush().unwrap();
}
}
impl Default for IO {
fn default() -> Self {
Self::new()
}
}
pub trait Scan {
fn scan(io: &mut IO) -> Self;
}
macro_rules! impl_parse_int {
($($t:tt),*) => {
$(
impl Scan for $t {
fn scan(s: &mut IO) -> Self {
let mut res = 0;
let mut neg = false;
for d in s.scan_raw() {
if *d == b'-' {
neg = true;
} else {
res *= 10;
res += (*d - b'0') as $t;
}
}
if neg { res = res.wrapping_neg(); }
res
}
}
)*
};
}
impl_parse_int!(i16, i32, i64, isize, u16, u32, u64, usize);
impl<T: Scan, U: Scan> Scan for (T, U) {
fn scan(s: &mut IO) -> Self {
(T::scan(s), U::scan(s))
}
}
impl<T: Scan, U: Scan, V: Scan> Scan for (T, U, V) {
fn scan(s: &mut IO) -> Self {
(T::scan(s), U::scan(s), V::scan(s))
}
}
impl<T: Scan, U: Scan, V: Scan, W: Scan> Scan for (T, U, V, W) {
fn scan(s: &mut IO) -> Self {
(T::scan(s), U::scan(s), V::scan(s), W::scan(s))
}
}
pub trait Print {
fn print(w: &mut IO, x: Self);
}
macro_rules! impl_print_int {
($($t:ty),*) => {
$(
impl Print for $t {
fn print(w: &mut IO, x: Self) {
w.buf.write_all(x.to_string().as_bytes()).unwrap();
}
}
)*
};
}
impl_print_int!(i16, i32, i64, isize, u16, u32, u64, usize);
impl Print for u8 {
fn print(w: &mut IO, x: Self) {
w.buf.write_all(&[x]).unwrap();
}
}
impl Print for &[u8] {
fn print(w: &mut IO, x: Self) {
w.buf.write_all(x).unwrap();
}
}
impl Print for &str {
fn print(w: &mut IO, x: Self) {
w.print(x.as_bytes());
}
}
impl<T: Print, U: Print> Print for (T, U) {
fn print(w: &mut IO, (x, y): Self) {
w.print(x);
w.print(" ");
w.print(y);
}
}
impl<T: Print, U: Print, V: Print> Print for (T, U, V) {
fn print(w: &mut IO, (x, y, z): Self) {
w.print(x);
w.print(" ");
w.print(y);
w.print(" ");
w.print(z);
}
}
// ------------ io module end ------------