結果

問題 No.1749 ラムドスウイルスの感染拡大
ユーザー Moss_Local
提出日時 2021-11-19 21:36:06
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 13 ms / 2,000 ms
コード長 6,027 bytes
コンパイル時間 13,097 ms
コンパイル使用メモリ 399,840 KB
実行使用メモリ 9,856 KB
最終ジャッジ日時 2024-12-31 21:56:16
合計ジャッジ時間 14,372 ms
ジャッジサーバーID
(参考情報)
judge3 / judge5
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 * 4
other AC * 26
権限があれば一括ダウンロードができます
コンパイルメッセージ
warning: unnecessary parentheses around type
  --> src/main.rs:68:15
   |
68 | fn readi() -> (i64) {
   |               ^   ^
   |
   = note: `#[warn(unused_parens)]` on by default
help: remove these parentheses
   |
68 - fn readi() -> (i64) {
68 + fn readi() -> i64 {
   |

warning: unused variable: `i`
   --> src/main.rs:214:9
    |
214 |     for i in 0..m {
    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
    |
    = note: `#[warn(unused_variables)]` on by default

warning: unused variable: `w`
   --> src/main.rs:222:21
    |
222 |             for (u, w) in &graph[v] {
    |                     ^ help: if this is intentional, prefix it with an underscore: `_w`

warning: variable does not need to be mutable
   --> src/main.rs:215:14
    |
215 |         let (mut a, mut b) = readuu();
    |              ----^
    |              |
    |              help: remove this `mut`
    |
    = note: `#[warn(unused_mut)]` on by default

warning: variable does not need to be mutable
   --> src/main.rs:215:21
    |
215 |         let (mut a, mut b) = readuu();
    |                     ----^
    |                     |
    |                     help: remove this `mut`

warning: comparison is useless due to type limits
   --> src/main.rs:181:8
    |
181 |     if n >= 0 {
    |        ^^^^^^
    |
    = note: `#[warn(unused_comparisons)]` on by default

ソースコード

diff #
プレゼンテーションモードにする

// -*- coding:utf-8-unix -*-
// #![feature(map_first_last)]
#![allow(dead_code)]
#![allow(unused_imports)]
#![allow(unused_macros)]
use std::cmp::Ordering::*;
use std::collections::*;
use std::convert::*;
use std::convert::{From, Into};
use std::error::Error;
use std::f64::consts::PI;
use std::fmt::Debug;
use std::fmt::Display;
use std::fs::File;
use std::hash::Hash;
use std::io::prelude::*;
use std::io::*;
use std::marker::Copy;
use std::mem::*;
use std::ops::Bound::*;
use std::ops::RangeBounds;
use std::ops::{Add, Mul, Neg, Sub};
use std::slice::from_raw_parts;
use std::str;
use std::vec;
const INF: i64 = 1223372036854775807;
const UINF: usize = INF as usize;
// const FINF: f64 = 122337203685.0;
const LINF: i64 = 2147483647;
const FINF: f64 = LINF as f64;
const INF128: i128 = 1223372036854775807000000000000;
// const MOD: i64 = 1000000007;
const MOD: i64 = 998244353;
const MPI: f64 = 3.14159265358979323846264338327950288f64;
// const MOD: i64 = INF;
const UMOD: usize = MOD as usize;
use std::cmp::*;
use std::collections::*;
use std::io::stdin;
use std::io::stdout;
use std::io::Write;
macro_rules! p {
($x:expr) => {
println!("{}", $x);
};
}
macro_rules! d {
($x:expr) => {
println!("{:?}", $x);
};
}
// use str::Chars;
// use str::Chars;
#[allow(dead_code)]
fn read<T: std::str::FromStr>() -> T {
let mut s = String::new();
std::io::stdin().read_line(&mut s).ok();
s.trim().parse().ok().unwrap()
}
#[allow(dead_code)]
fn readi() -> (i64) {
let mut str = String::new();
let _ = stdin().read_line(&mut str).unwrap();
let mut iter = str.split_whitespace();
iter.next().unwrap().parse::<i64>().unwrap()
}
#[allow(dead_code)]
fn read_vec<T: std::str::FromStr>() -> Vec<T> {
read::<String>()
.split_whitespace()
.map(|e| e.parse().ok().unwrap())
.collect()
}
#[allow(dead_code)]
fn read_mat<T: std::str::FromStr>(n: u32) -> Vec<Vec<T>> {
(0..n).map(|_| read_vec()).collect()
}
#[allow(dead_code)]
fn readii() -> (i64, i64) {
let mut str = String::new();
let _ = stdin().read_line(&mut str).unwrap();
let mut iter = str.split_whitespace();
(
iter.next().unwrap().parse::<i64>().unwrap(),
iter.next().unwrap().parse::<i64>().unwrap(),
)
}
fn readff() -> (f64, f64) {
let mut str = String::new();
let _ = stdin().read_line(&mut str).unwrap();
let mut iter = str.split_whitespace();
(
iter.next().unwrap().parse::<f64>().unwrap(),
iter.next().unwrap().parse::<f64>().unwrap(),
)
}
#[allow(dead_code)]
fn readiii() -> (i64, i64, i64) {
let mut str = String::new();
let _ = stdin().read_line(&mut str).unwrap();
let mut iter = str.split_whitespace();
(
iter.next().unwrap().parse::<i64>().unwrap(),
iter.next().unwrap().parse::<i64>().unwrap(),
iter.next().unwrap().parse::<i64>().unwrap(),
)
}
#[allow(dead_code)]
fn readuu() -> (usize, usize) {
let mut str = String::new();
let _ = stdin().read_line(&mut str).unwrap();
let mut iter = str.split_whitespace();
(
iter.next().unwrap().parse::<usize>().unwrap(),
iter.next().unwrap().parse::<usize>().unwrap(),
)
}
fn readcc() -> (char, char) {
let mut str = String::new();
let _ = stdin().read_line(&mut str).unwrap();
let mut iter = str.split_whitespace();
(
iter.next().unwrap().parse::<char>().unwrap(),
iter.next().unwrap().parse::<char>().unwrap(),
)
}
#[allow(dead_code)]
fn readuuu() -> (usize, usize, usize) {
let mut str = String::new();
let _ = stdin().read_line(&mut str).unwrap();
let mut iter = str.split_whitespace();
(
iter.next().unwrap().parse::<usize>().unwrap(),
iter.next().unwrap().parse::<usize>().unwrap(),
iter.next().unwrap().parse::<usize>().unwrap(),
)
}
#[allow(dead_code)]
fn readuuuu() -> (usize, usize, usize, usize) {
let mut str = String::new();
let _ = stdin().read_line(&mut str).unwrap();
let mut iter = str.split_whitespace();
(
iter.next().unwrap().parse::<usize>().unwrap(),
iter.next().unwrap().parse::<usize>().unwrap(),
iter.next().unwrap().parse::<usize>().unwrap(),
iter.next().unwrap().parse::<usize>().unwrap(),
)
}
fn readiiii() -> (i64, i64, i64, i64) {
let mut str = String::new();
let _ = stdin().read_line(&mut str).unwrap();
let mut iter = str.split_whitespace();
(
iter.next().unwrap().parse::<i64>().unwrap(),
iter.next().unwrap().parse::<i64>().unwrap(),
iter.next().unwrap().parse::<i64>().unwrap(),
iter.next().unwrap().parse::<i64>().unwrap(),
)
}
fn prime_table(n: usize) -> Vec<bool> {
let mut is_prime = vec![true; n + 1];
let mut res = vec![0 as usize; 0];
if n >= 0 {
is_prime[0] = false;
}
if n >= 1 {
is_prime[1] = false;
}
let mut i = 2 as usize;
while i * i <= n {
if !is_prime[i] {
i += 1;
continue;
}
// println!("{:?}", "call");
let mut j = i + i as usize;
while j <= n {
is_prime[j] = false;
j += i;
}
i += 1;
}
for i in 0..n {
if is_prime[i] == true {
res.push(i);
}
}
return is_prime;
}
fn solve() {
let (n, m, t) = readuuu();
let mut data = vec![vec![0 as usize; (n) as usize]; (t + 1) as usize];
let mut graph = vec![vec![(0 as usize, 0 as usize); (0) as usize]; (n) as usize];
for i in 0..m {
let (mut a, mut b) = readuu();
graph[a].push((b, 1));
graph[b].push((a, 1));
}
data[0][0] = 1;
for i in 0..t {
for v in 0..n {
for (u, w) in &graph[v] {
data[i + 1][v] += data[i][*u];
}
// data[i + 1][v] += data[i][v];
data[i + 1][v] %= UMOD;
}
}
println!("{}", data[t][0]);
return;
}
fn main() {
solve();
}
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