#987059 (Rust) No.2779 Don't make Pair

• 問題: No.2779 Don't make Pair
• ユーザー: Moss_Local
• 提出日時: 2024-06-07 22:52:43
• 言語: Rust (1.77.0 + proconio)
• 結果: AC
• 実行時間: 73 ms / 2,000 ms
• コード長: 4,810 bytes
• コンパイル時間: 13,036 ms
• コンパイル使用メモリ: 377,824 KB
• 実行使用メモリ: 12,176 KB
• 最終ジャッジ日時: 2024-06-07 22:53:00
• 合計ジャッジ時間: 15,374 ms
• ジャッジサーバーID （参考情報）: judge5 / judge4

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	0 ms; 5,248 KB
testcase_01	AC	1 ms; 5,376 KB
testcase_02	AC	1 ms; 5,376 KB
testcase_03	AC	0 ms; 5,376 KB
testcase_04	AC	0 ms; 5,376 KB
testcase_05	AC	1 ms; 5,376 KB
testcase_06	AC	0 ms; 5,376 KB
testcase_07	AC	0 ms; 5,376 KB
testcase_08	AC	0 ms; 5,376 KB
testcase_09	AC	1 ms; 5,376 KB
testcase_10	AC	5 ms; 5,376 KB
testcase_11	AC	2 ms; 5,376 KB
testcase_12	AC	25 ms; 5,376 KB
testcase_13	AC	14 ms; 5,376 KB
testcase_14	AC	21 ms; 5,492 KB
testcase_15	AC	38 ms; 5,712 KB
testcase_16	AC	32 ms; 5,376 KB
testcase_17	AC	35 ms; 7,212 KB
testcase_18	AC	29 ms; 6,956 KB
testcase_19	AC	36 ms; 5,748 KB
testcase_20	AC	18 ms; 5,376 KB
testcase_21	AC	45 ms; 6,036 KB
testcase_22	AC	44 ms; 5,644 KB
testcase_23	AC	73 ms; 12,176 KB
testcase_24	AC	32 ms; 5,520 KB
testcase_25	AC	37 ms; 5,760 KB
testcase_26	AC	56 ms; 6,672 KB
testcase_27	AC	52 ms; 6,940 KB
testcase_28	AC	57 ms; 6,544 KB

コンパイルメッセージ

warning: variable does not need to be mutable
   --> src/main.rs:122:9
    |
122 |     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:128:9
    |
128 |     let mut vec: Vec<i64> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:133:9
    |
133 |     let mut vec: Vec<usize> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:139:9
    |
139 |     let mut vec: Vec<f64> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:144:9
    |
144 |     let mut vec: Vec<char> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:149:9
    |
149 |     let mut vec: Vec<usize> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:154:9
    |
154 |     let mut vec: Vec<i64> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:160:9
    |
160 |     let mut vec: Vec<usize> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: unused variable: `k`
   --> src/main.rs:194:10
    |
194 |     for (k, v) in map.iter() {
    |          ^ help: if this is intentional, prefix it with an underscore: `_k`
    |
    = note: `#[warn(unused_variables)]` on by default

warning: variable does not need to be mutable
   --> src/main.rs:188:9
    |
188 |     let mut a:

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
        }
    };
}

fn main() {
    solve();
}

//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() {
    let n: usize = read();
    let mut a: Vec<usize> = read_vec();
    let mut map = BTreeMap::new();
    let mut right_more_two_num = 0;
    for i in 0..n {
        *map.entry(a[i]).or_insert(0) += 1;
    }
    for (k, v) in map.iter() {
        if *v >= 2 {
            right_more_two_num += 1;
        }
    }
    let mut left_cnt = BTreeMap::new();
    let mut res = vec![];
    for i in 0..n - 1 {
        let x = a[i];
        *map.entry(x).or_insert(0) -= 1;
        if map[&x] == 1 {
            right_more_two_num -= 1;
        }
        // d!(right_more_two_num);

        *left_cnt.entry(x).or_insert(0) += 1;
        if left_cnt[&x] > 1 {
            break;
        }
        if right_more_two_num == 0 {
            res.push(i + 1);
        }
    }
    p!(res.len());
    vp!(res);
}