結果
| 問題 |
No.1147 土偶Ⅱ
|
| ユーザー |
|
| 提出日時 | 2020-08-08 01:24:31 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
AC
|
| 実行時間 | 6 ms / 500 ms |
| コード長 | 4,652 bytes |
| コンパイル時間 | 13,069 ms |
| コンパイル使用メモリ | 382,980 KB |
| 実行使用メモリ | 6,820 KB |
| 最終ジャッジ日時 | 2024-10-11 10:15:41 |
| 合計ジャッジ時間 | 13,388 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 20 |
ソースコード
#![allow(unused_imports, unused_macros, dead_code)]
macro_rules! min {
(.. $x:expr) => {{
let mut it = $x.iter();
it.next().map(|z| it.fold(z, |x, y| min!(x, y)))
}};
($x:expr) => ($x);
($x:expr, $($ys:expr),*) => {{
let t = min!($($ys),*);
if $x < t { $x } else { t }
}}
}
macro_rules! max {
(.. $x:expr) => {{
let mut it = $x.iter();
it.next().map(|z| it.fold(z, |x, y| max!(x, y)))
}};
($x:expr) => ($x);
($x:expr, $($ys:expr),*) => {{
let t = max!($($ys),*);
if $x > t { $x } else { t }
}}
}
macro_rules! ewriteln {
($($args:expr),*) => { let _ = writeln!(&mut std::io::stderr(), $($args),*); };
}
macro_rules! trace {
($x:expr) => { ewriteln!(">>> {} = {:?}", stringify!($x), $x) };
($($xs:expr),*) => { trace!(($($xs),*)) }
}
macro_rules! flush {
() => {
std::io::stdout().flush().unwrap();
};
}
macro_rules! put {
(.. $x:expr) => {{
let mut it = $x.iter();
if let Some(x) = it.next() { print!("{}", x); }
for x in it { print!(" {}", x); }
println!("");
}};
($x:expr) => { println!("{}", $x) };
($x:expr, $($xs:expr),*) => { print!("{} ", $x); put!($($xs),*) }
}
trait Group:
std::ops::Add<Output = Self>
+ std::ops::Sub<Output = Self>
+ std::ops::Neg<Output = Self>
+ std::iter::Sum
+ Clone
+ Copy
{
fn zero() -> Self;
}
impl Group for i32 {
fn zero() -> Self {
0
}
}
impl Group for i64 {
fn zero() -> Self {
0
}
}
impl Group for i128 {
fn zero() -> Self {
0
}
}
impl Group for f32 {
fn zero() -> Self {
0.0
}
}
impl Group for f64 {
fn zero() -> Self {
0.0
}
}
#[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Copy, Debug)]
enum Hyper<X> {
NegInf,
Real(X),
Inf,
}
use Hyper::{Inf, NegInf, Real};
impl<X> Hyper<X> {
fn unwrap(self) -> X {
if let Hyper::Real(x) = self {
x
} else {
panic!()
}
}
}
impl<X: Group> std::ops::Add for Hyper<X> {
type Output = Self;
fn add(self, rhs: Hyper<X>) -> Hyper<X> {
match (self, rhs) {
(Real(x), Real(y)) => Real(x + y),
(Inf, _) => Inf,
(_, Inf) => Inf,
_ => NegInf,
}
}
}
impl<X: Group> std::ops::Sub for Hyper<X> {
type Output = Self;
fn sub(self, rhs: Hyper<X>) -> Hyper<X> {
self + (-rhs)
}
}
impl<X: Group> std::ops::Neg for Hyper<X> {
type Output = Self;
fn neg(self) -> Hyper<X> {
match self {
Inf => NegInf,
NegInf => Inf,
Real(x) => Real(-x),
}
}
}
fn wall<X: Group + PartialOrd>(d: &mut Vec<Vec<Hyper<X>>>) {
let n = d.len();
for k in 0..n {
for i in 0..n {
for j in 0..n {
d[i][j] = min!(d[i][j], d[i][k] + d[k][j]);
}
}
}
}
fn main() {
let mut sc = Scanner::new();
let n: usize = sc.cin();
let m: usize = sc.cin();
let mut d: Vec<Vec<Hyper<i64>>> = vec![vec![Inf; n]; n];
for i in 0..n {
d[i][i] = Real(0);
}
for _ in 0..m {
let a = sc.cin::<usize>() - 1;
let b = sc.cin::<usize>() - 1;
d[a][b] = Real(1);
d[b][a] = Real(1);
}
wall(&mut d);
let mut ans = 0;
for i in 0..n {
for j in 0..i {
if d[i][j] == Real(2) {
continue;
}
for k in 0..j {
if d[i][k] == Real(2) {
continue;
}
if d[j][k] == Real(2) {
continue;
}
ans += 1;
}
}
}
put!(ans);
}
use std::collections::VecDeque;
use std::io::{self, Write};
use std::str::FromStr;
struct Scanner {
stdin: io::Stdin,
buffer: VecDeque<String>,
}
impl Scanner {
fn new() -> Self {
Scanner {
stdin: io::stdin(),
buffer: VecDeque::new(),
}
}
fn cin<T: FromStr>(&mut self) -> T {
while self.buffer.is_empty() {
let mut line = String::new();
let _ = self.stdin.read_line(&mut line);
for w in line.split_whitespace() {
self.buffer.push_back(String::from(w));
}
}
self.buffer.pop_front().unwrap().parse::<T>().ok().unwrap()
}
fn chars(&mut self) -> Vec<char> {
self.cin::<String>().chars().collect()
}
fn vec<T: FromStr>(&mut self, n: usize) -> Vec<T> {
(0..n).map(|_| self.cin()).collect()
}
}