#634409 (Rust) No.1439 Let's Compare!!!!

• 問題: No.1439 Let's Compare!!!!
• ユーザー: Moss_Local
• 提出日時: 2021-03-26 21:51:21
• 言語: Rust (1.77.0 + proconio)
• 結果: AC
• 実行時間: 370 ms / 2,000 ms
• コード長: 6,589 bytes
• コンパイル時間: 27,592 ms
• コンパイル使用メモリ: 378,860 KB
• 実行使用メモリ: 12,544 KB
• 最終ジャッジ日時: 2024-11-29 08:43:30
• 合計ジャッジ時間: 18,586 ms
• ジャッジサーバーID （参考情報）: judge4 / judge3

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	1 ms; 5,248 KB
testcase_01	AC	2 ms; 5,248 KB
testcase_02	AC	2 ms; 5,248 KB
testcase_03	AC	1 ms; 5,248 KB
testcase_04	AC	1 ms; 5,248 KB
testcase_05	AC	1 ms; 5,248 KB
testcase_06	AC	1 ms; 5,248 KB
testcase_07	AC	6 ms; 5,248 KB
testcase_08	AC	11 ms; 5,248 KB
testcase_09	AC	4 ms; 5,248 KB
testcase_10	AC	370 ms; 12,288 KB
testcase_11	AC	338 ms; 9,968 KB
testcase_12	AC	330 ms; 9,856 KB
testcase_13	AC	369 ms; 12,544 KB
testcase_14	AC	370 ms; 12,544 KB
testcase_15	AC	338 ms; 9,088 KB
testcase_16	AC	297 ms; 8,960 KB
testcase_17	AC	296 ms; 8,832 KB
testcase_18	AC	280 ms; 9,088 KB

コンパイルメッセージ

warning: unnecessary parentheses around method argument
   --> src/main.rs:226:31
    |
226 |         let mut ok = st.range((0..n + 1)).next();
    |                               ^        ^
    |
    = note: `#[warn(unused_parens)]` on by default
help: remove these parentheses
    |
226 -         let mut ok = st.range((0..n + 1)).next();
226 +         let mut ok = st.range(0..n + 1).next();
    |

warning: unused variable: `i`
   --> src/main.rs:207:9
    |
207 |     for i in 0..q {
    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
    |
    = note: `#[warn(unused_variables)]` on by default

warning: variable does not need to be mutable
   --> src/main.rs:186:9
    |
186 |     let mut v = s.as_bytes().to_vec();
    |         ----^
    |         |
    |         help: remove this `mut`
    |
    = note: `#[warn(unused_mut)]` on by default

warning: variable does not need to be mutable
   --> src/main.rs:193:9
    |
193 |     let mut v = s.as_bytes().to_vec();
    |         ----^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:211:13
    |
211 |         let mut c: char = s.next().unwrap().parse().unwrap();
    |             ----^
    |             |
    |             help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:213:13
    |
213 |         let mut y: usize = s.next().unwrap().parse().unwrap();
    |             ----^
    |             |
    |             help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:226:13
    |
226 |         let mut ok = st.range((0..n + 1)).next();
    |             ----^^
    |             |
    |             help: remove this `mut`

ソースコード

// -*- coding:utf-8-unix -*-
// #![feature(map_first_last)]
#![allow(dead_code)]
#![allow(unused_imports)]
#![allow(unused_macros)]

use std::collections::*;
use std::convert::*;
use std::convert::{From, Into};
use std::fmt::Debug;
use std::fs::File;
use std::io::prelude::*;
use std::io::*;
use std::marker::Copy;
use std::mem::*;
use std::ops::Bound::*;
use std::ops::{Add, Mul, Neg, Sub};
use std::str;
use std::vec;
use std::{cmp, process::Output};
use std::{cmp::Ordering, env::consts::DLL_PREFIX};
use std::{cmp::Ordering::*, f32::consts::PI};

const INF: i64 = 1223372036854775807;
const UINF: usize = INF as usize;
const FINF: f64 = 122337203685.0;
const INF128: i128 = 1223372036854775807000000000000;
const LINF: i64 = 2147483647;
// const MOD: i64 = 1000000007;
const MOD: i64 = 998244353;
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! pp {
    ($x:expr) => {
        println!("{:?}", $x);
    };
}

macro_rules! d {
    ($x:expr) => {
        dbg!($x);
    };
}

// 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_vec2<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(),
    )
}
// / Equivalent to std::lowerbound and std::upperbound in c++
fn neighbors(tree: &BTreeSet<i64>, val: i64) -> (Option<&i64>, Option<&i64>) {
    use std::ops::Bound::*;

    let mut before = tree.range((Unbounded, Excluded(val)));
    let mut after = tree.range((Excluded(val), Unbounded));

    (before.next_back(), after.next())
}

fn solve() {
    let n: usize = read();
    let s: String = read();
    let mut v = s.as_bytes().to_vec();
    let mut vec = vec![0; s.len()];
    for i in 0..s.len() {
        vec[i] = v[i] as usize - '0' as usize;
    }
    let mut v1 = vec.clone();
    let s: String = read();
    let mut v = s.as_bytes().to_vec();
    let mut vec = vec![0; s.len()];
    for i in 0..s.len() {
        vec[i] = v[i] as usize - '0' as usize;
    }
    let mut v2 = vec.clone();
    let q: usize = read();
    let mut st = BTreeSet::new();
    for i in 0..n {
        if v1[i] != v2[i] {
            st.insert(i);
        }
    }

    for i in 0..q {
        let mut s = String::new();
        std::io::stdin().read_line(&mut s).unwrap();
        let mut s = s.split_whitespace();
        let mut c: char = s.next().unwrap().parse().unwrap();
        let mut x: usize = s.next().unwrap().parse().unwrap();
        let mut y: usize = s.next().unwrap().parse().unwrap();
        x -= 1;
        if c == 'S' {
            v1[x] = y;
        } else {
            v2[x] = y;
        }
        if v1[x] == v2[x] {
            st.remove(&x);
        } else {
            st.insert(x);
        }

        let mut ok = st.range((0..n + 1)).next();
        if ok == None {
            println!("{}", "=");
        } else {
            let ok = *ok.unwrap();
            if ok == n {
                println!("{}", "=");
            } else {
                if v1[ok] > v2[ok] {
                    println!("{}", ">");
                } else {
                    println!("{}", "<");
                }
            }
        }
    }

    return;
}

fn main() {
    solve()
}