結果

問題 No.2779 Don't make Pair
ユーザー Moss_LocalMoss_Local
提出日時 2024-06-07 22:52:43
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 88 ms / 2,000 ms
コード長 4,810 bytes
コンパイル時間 13,675 ms
コンパイル使用メモリ 379,244 KB
実行使用メモリ 12,176 KB
最終ジャッジ日時 2024-12-26 09:22:35
合計ジャッジ時間 16,465 ms
ジャッジサーバーID
(参考情報)
judge3 / judge4
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 * 5
other AC * 24
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: 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

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 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);
}
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