#774987 (Rust) No.1995 CHIKA Road

提出ソース

結果

問題	No.1995 CHIKA Road
ユーザー	Moss_Local
提出日時	2022-07-01 21:43:42
言語	Rust (1.77.0 + proconio)
結果	AC
実行時間	34 ms / 2,000 ms
コード長	5,213 bytes
コンパイル時間	28,260 ms
コンパイル使用メモリ	405,880 KB
実行使用メモリ	6,820 KB
最終ジャッジ日時	2024-11-26 04:29:01
合計ジャッジ時間	15,144 ms
ジャッジサーバーID （参考情報）	judge2 / judge3

このコードへのチャレンジ
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テストケース

テストケース表示

入力	結果	実行時間実行使用メモリ
testcase_00	AC	1 ms 6,816 KB
testcase_01	AC	1 ms 6,820 KB
testcase_02	AC	1 ms 6,816 KB
testcase_03	AC	1 ms 6,816 KB
testcase_04	AC	1 ms 6,820 KB
testcase_05	AC	1 ms 6,816 KB
testcase_06	AC	4 ms 6,820 KB
testcase_07	AC	9 ms 6,816 KB
testcase_08	AC	1 ms 6,820 KB
testcase_09	AC	1 ms 6,820 KB
testcase_10	AC	29 ms 6,820 KB
testcase_11	AC	34 ms 6,816 KB
testcase_12	AC	34 ms 6,816 KB
testcase_13	AC	11 ms 6,816 KB
testcase_14	AC	12 ms 6,816 KB
testcase_15	AC	30 ms 6,820 KB
testcase_16	AC	5 ms 6,816 KB
testcase_17	AC	20 ms 6,820 KB
testcase_18	AC	33 ms 6,816 KB
testcase_19	AC	32 ms 6,820 KB
testcase_20	AC	18 ms 6,816 KB
testcase_21	AC	17 ms 6,820 KB
testcase_22	AC	32 ms 6,820 KB
testcase_23	AC	10 ms 6,816 KB
testcase_24	AC	28 ms 6,820 KB
testcase_25	AC	6 ms 6,820 KB
testcase_26	AC	11 ms 6,816 KB
testcase_27	AC	26 ms 6,816 KB
testcase_28	AC	16 ms 6,820 KB
testcase_29	AC	32 ms 6,816 KB
testcase_30	AC	6 ms 6,820 KB
testcase_31	AC	3 ms 6,816 KB
testcase_32	AC	8 ms 6,816 KB
testcase_33	AC	25 ms 6,820 KB
testcase_34	AC	3 ms 6,816 KB
testcase_35	AC	11 ms 6,816 KB
testcase_36	AC	12 ms 6,820 KB
testcase_37	AC	31 ms 6,816 KB
testcase_38	AC	21 ms 6,816 KB
testcase_39	AC	3 ms 6,820 KB

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:74:15
   |
74 | fn readi() -> (i64) {
   |               ^   ^
   |
   = note: `#[warn(unused_parens)]` on by default
help: remove these parentheses
   |
74 - fn readi() -> (i64) {
74 + fn readi() -> i64 {
   |

warning: use of deprecated function `std::intrinsics::drop_in_place`: no longer an intrinsic - use `ptr::drop_in_place` directly
  --> src/main.rs:17:22
   |
17 | use std::intrinsics::drop_in_place;
   |                      ^^^^^^^^^^^^^
   |
   = note: `#[warn(deprecated)]` on by default

warning: unused variable: `i`
   --> src/main.rs:186:9
    |
186 |     for i in 0..m {
    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
    |
    = note: `#[warn(unused_variables)]` on by default

ソースコード

raw source code

// -*- coding:utf-8-unix -*-
// #![feature(map_first_last)]
#![allow(dead_code)]
#![allow(unused_imports)]
#![allow(unused_macros)]
use std::any::Any;
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::intrinsics::drop_in_place;
use std::io::prelude::*;
use std::io::*;
use std::iter::Filter;
use std::marker::Copy;
use std::mem::*;
use std::ops::Bound::*;
use std::ops::RangeBounds;
use std::ops::{Add, Mul, Neg, Sub};
use std::process;
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 UMOD: usize = MOD as usize;

const MPI: f64 = 3.14159265358979323846264338327950288f64;
// const MOD: i64 = INF;

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);
    };
}

fn main() {
    solve();
}

// 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(),
    )
}

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 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(),
    )
}

#[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 solve() {
    let (n, m) = readuu();
    let res = (n - 1) * 2;
    let mut dat = vec![];
    for i in 0..m {
        let (a, b) = readuu();
        dat.push((b, a));
    }
    dat.sort();
    // dat.reverse();
    let mut end = 0;
    let mut cnt = 0;
    for i in 0..m {
        if dat[i].1 >= end {
            cnt += 1;
            end = dat[i].0;
        }
    }
    p!(res - cnt);
    return;
}

yukicoder

結果

テストケース

コンパイルメッセージ

ソースコード