結果
| 問題 |
No.2841 Leaf Eater
|
| コンテスト | |
| ユーザー |
 Moss_Local
|
| 提出日時 | 2024-08-09 22:28:26 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 5,056 bytes |
| コンパイル時間 | 14,565 ms |
| コンパイル使用メモリ | 377,828 KB |
| 実行使用メモリ | 26,508 KB |
| 最終ジャッジ日時 | 2024-08-09 22:28:44 |
| 合計ジャッジ時間 | 15,873 ms |
|
ジャッジサーバーID （参考情報） |
judge4 / judge2 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 4 WA * 19 |
コンパイルメッセージ
warning: variable does not need to be mutable
--> src/main.rs:118:9
|
118 | let mut vec: Vec<i64> = read_vec();
| ----^^^
| |
| help: remove this `mut`
|
= note: `#[warn(unused_mut)]` on by default
warning: variable does not need to be mutable
--> src/main.rs:124:9
|
124 | let mut vec: Vec<i64> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:129:9
|
129 | let mut vec: Vec<usize> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:135:9
|
135 | let mut vec: Vec<f64> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:140:9
|
140 | let mut vec: Vec<char> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:145:9
|
145 | let mut vec: Vec<usize> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:150:9
|
150 | let mut vec: Vec<i64> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:156:9
|
156 | let mut vec: Vec<usize> = read_vec();
| ----^^^
| |
| help: remove this `mut`
warning: variable does not need to be mutable
--> src/main.rs:184:9
|
184 | let mut p: Vec<usize> = read_vec();
| ----^
| |
| help: remove this `mut`
warning: unused variable: `i`
--> src/main.rs:220:9
|
220 | for i in 0..n {
| ^ help: if this is intentional, prefix i
ソースコード
// -*- coding:utf-8-unix -*-
// #![feature(map_first_last)]
#![allow(dead_code)]
#![allow(unused_imports)]
#![allow(unused_macros)]
// use core::num;
use std::cmp::*;
use std::fmt::*;
use std::hash::*;
use std::iter::FromIterator;
use std::*;
use std::{cmp, collections, fmt, io, iter, ops, str};
const INF: i64 = 1223372036854775807;
const UINF: usize = INF as usize;
const LINF: i64 = 2147483647;
const INF128: i128 = 1223372036854775807000000000000;
const MOD1: i64 = 1000000007;
const MOD9: i64 = 998244353;
const MOD: i64 = MOD9;
// const MOD: i64 = MOD2;
const UMOD: usize = MOD as usize;
const M_PI: f64 = 3.14159265358979323846;
// use proconio::input;
// const MOD: i64 = INF;
use cmp::Ordering::*;
use std::collections::*;
use std::io::stdin;
use std::io::stdout;
use std::io::Write;
macro_rules! p {
($x:expr) => {
//if expr
println!("{}", $x);
};
}
macro_rules! vp {
// vector print separate with space
($x:expr) => {
println!(
"{}",
$x.iter()
.map(|x| x.to_string())
.collect::<Vec<_>>()
.join(" ")
);
};
}
macro_rules! d {
($x:expr) => {
eprintln!("{:?}", $x);
};
}
macro_rules! yn {
($val:expr) => {
if $val {
println!("Yes");
} else {
println!("No");
}
};
}
macro_rules! map{
// declear btreemap
($($key:expr => $val:expr),*) => {
{
let mut map = ::std::collections::BTreeMap::new();
$(
map.insert($key, $val);
)*
map
}
};
}
macro_rules! set{
// declear btreemap
($($key:expr),*) => {
{
let mut set = ::std::collections::BTreeSet::new();
$(
set.insert($key);
)*
set
}
};
}
//input output
#[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 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 vec: Vec<i64> = read_vec();
(vec[0], vec[1])
}
#[allow(dead_code)]
fn readiii() -> (i64, i64, i64) {
let mut vec: Vec<i64> = read_vec();
(vec[0], vec[1], vec[2])
}
#[allow(dead_code)]
fn readuu() -> (usize, usize) {
let mut vec: Vec<usize> = read_vec();
(vec[0], vec[1])
}
#[allow(dead_code)]
fn readff() -> (f64, f64) {
let mut vec: Vec<f64> = read_vec();
(vec[0], vec[1])
}
fn readcc() -> (char, char) {
let mut vec: Vec<char> = read_vec();
(vec[0], vec[1])
}
fn readuuu() -> (usize, usize, usize) {
let mut vec: Vec<usize> = read_vec();
(vec[0], vec[1], vec[2])
}
#[allow(dead_code)]
fn readiiii() -> (i64, i64, i64, i64) {
let mut vec: Vec<i64> = read_vec();
(vec[0], vec[1], vec[2], vec[3])
}
#[allow(dead_code)]
fn readuuuu() -> (usize, usize, usize, usize) {
let mut vec: Vec<usize> = read_vec();
(vec[0], vec[1], vec[2], vec[3])
}
fn dijkstra(graph: &Vec<Vec<(usize, usize)>>, start: usize) -> Vec<usize> {
let mut dist = vec![INF as usize; graph.len()];
let mut heap = BinaryHeap::new();
heap.push(Reverse((0 as usize, start)));
dist[start] = 0;
while let Some(Reverse(x)) = heap.pop() {
let cost = x.0;
let v = x.1;
if cost > dist[v] {
continue;
}
for edge in &graph[v] {
let nc = cost + edge.1;
let nv = edge.0;
if nc < dist[nv] {
heap.push(Reverse((nc, nv)));
dist[nv] = nc;
}
}
}
return dist;
}
fn solve_part() {
let n: usize = read();
let mut p: Vec<usize> = read_vec();
let mut graph = vec![vec![(0 as usize, 0 as usize); (0) as usize]; (n) as usize];
for i in 0..n - 1 {
let v = i + 1;
let u = p[i] - 1;
graph[v].push((u, 1));
graph[u].push((v, 1));
}
let mut dist = dijkstra(&graph, 0);
// 最大深さを２段階下げることはできない
// depth2をつかんだ方が勝ち
// depth3の最後の頂点を掴んだ人が負け
dist.iter_mut().for_each(|x| *x += 1);
let max_depth = *dist.iter().max().unwrap();
let mut dist_num = vec![0; max_depth + 1];
for d in dist {
dist_num[d] += 1;
}
let mut win = 0;
for i in 3..max_depth + 1 {
if dist_num[i] == 1 {
win ^= 1;
} else {
break;
}
}
if win == 0 {
p!("First");
} else {
p!("Second");
}
return;
}
fn solve() {
let n: usize = read();
for i in 0..n {
solve_part();
}
return;
}
fn main() {
solve();
}