#906507 (Rust) No.1850 Rewrite Product

• 問題: No.1850 Rewrite Product
• ユーザー: kenichi
• 提出日時: 2023-08-20 17:59:51
• 言語: Rust (1.77.0 + proconio)
• 結果: AC
• 実行時間: 292 ms / 2,000 ms
• コード長: 5,951 bytes
• コンパイル時間: 12,171 ms
• コンパイル使用メモリ: 384,868 KB
• 実行使用メモリ: 5,376 KB
• 最終ジャッジ日時: 2024-05-08 00:26:34
• 合計ジャッジ時間: 13,818 ms
• ジャッジサーバーID （参考情報）: judge5 / judge1

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	292 ms; 5,376 KB

コンパイルメッセージ

warning: variable `tmp` is assigned to, but never used
  --> src/main.rs:55:13
   |
55 |     let mut tmp = 0;
   |             ^^^
   |
   = note: consider using `_tmp` instead
   = note: `#[warn(unused_variables)]` on by default

warning: value assigned to `tmp` is never read
  --> src/main.rs:70:13
   |
70 |             tmp = 1;
   |             ^^^
   |
   = help: maybe it is overwritten before being read?
   = note: `#[warn(unused_assignments)]` on by default

ソースコード

use std::io::*;
use std::str::FromStr;
/*
const LOW_CASE_ALPHABET: [char; 26] = [
    'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',
    't', 'u', 'v', 'w', 'x', 'y', 'z',
];
*/

fn main() {
    let t: usize = read();

    for _i in 0..t{
        let x: usize = read();
        let y: usize = read();

        if x >= y || x > 4{
            println!("Yes");
        }

        if x <= 4 && y > x{
            println!("No");
        }
    }
}

pub fn perfect(value_1: usize) -> usize {
    let mut perfect_number = Vec::new();
    for _i in 2..=value_1{
        let mut tmp = 0;
        for _j in 1..=((_i as f64).powf(0.5)) as usize{
            if _i % _j == 0{
                if _j * _j == _i{
                    tmp += _j;
                }else{
                    tmp += _j + (_i / _j);
                }
            }
        }
        tmp -= _i;

        if tmp == _i{
            perfect_number.push(_i);
        }
    }

    for _i in 0..perfect_number.len() - 1{
        println!("{}",perfect_number[_i]);
    }
    return perfect_number[perfect_number.len() - 1];
}

pub fn prime_number(value_1: usize, value_2: usize) -> usize {
    let mut primary = Vec::new();
    let mut tmp = 0;
    primary.push(2);

    for _i in 2..=value_1{
        let mut flag = 0;
        for _j in 0..primary.len(){
            if _i % primary[_j] == 0{
                flag = 1;
                break;
            }
        }
        if flag == 0{
            primary.push(_i);
        }
        if primary.len() == value_2{
            tmp = 1;
            return primary[primary.len() - 1];
        }
    }

    return 0;
}

pub fn ctoi(c: char) -> isize {
    let n = c as isize - '0' as isize;

    return n;
}

pub fn stoi(c: String) -> isize {
    let n = c.parse::<isize>().unwrap();

    return n;
}

pub fn find_char(sentence: Vec<char>, target: char, start: isize) -> isize {
    for _i in start as usize..sentence.len() {
        if sentence[_i] == target {
            return _i as isize;
        }
    }
    return -1;
}

pub fn hex_to_binary_2(hex_string: String, x: u32) -> Option<String> {
    match i64::from_str_radix(&hex_string, x) {
        Ok(decimal) => Some(format!("{}", decimal)),
        Err(_) => None,
    }
}

pub fn hex_to_binary(hex_string: &str, x: u32) -> Option<String> {
    match i64::from_str_radix(hex_string, x) {
        Ok(decimal) => Some(format!("{}", decimal)),
        Err(_) => None,
    }
}

pub fn my_floor(x: f64) -> f64 {
    let rounded = (x * 1000.0).floor() / 1000.0;

    rounded
}

pub fn upper_lower(x: char) -> char {
    let result: char;

    if x.is_uppercase() {
        result = x.to_ascii_lowercase();
    } else if x.is_lowercase() {
        result = x.to_ascii_uppercase();
    } else {
        result = x;
    }

    result
}

pub fn maxf_2(x: f64, y: f64) -> f64 {
    let result;

    if x >= y {
        result = x;
    } else {
        result = y;
    }

    result
}

pub fn max_2(x: isize, y: isize) -> isize {
    let result;

    if x >= y {
        result = x;
    } else {
        result = y;
    }

    result
}

pub fn max_u_2(x: usize, y: usize) -> usize {
    let result;

    if x >= y {
        result = x;
    } else {
        result = y;
    }

    result
}

pub fn min_u_2(x: usize, y: usize) -> usize {
    let result;

    if x <= y {
        result = x;
    } else {
        result = y;
    }

    result
}

pub fn min_2(x: isize, y: isize) -> isize {
    let result;

    if x >= y {
        result = y;
    } else {
        result = x;
    }

    result
}

pub fn min_2_i32(x: i32, y: i32) -> i32 {
    let result;

    if x >= y {
        result = y;
    } else {
        result = x;
    }

    result
}

pub fn max_3(x: isize, y: isize, z: isize) -> isize {
    let result;
    if x >= y && y >= z {
        result = x;
    } else if x >= z && z >= y {
        result = x;
    } else if y >= x && x >= z {
        result = y;
    } else if y >= z && z >= x {
        result = y;
    } else if z >= x && x >= y {
        result = z;
    } else {
        result = z;
    }

    result
}

pub fn max_u_3(x: usize, y: usize, z: usize) -> usize {
    let result;
    if x >= y && y >= z {
        result = x;
    } else if x >= z && z >= y {
        result = x;
    } else if y >= x && x >= z {
        result = y;
    } else if y >= z && z >= x {
        result = y;
    } else if z >= x && x >= y {
        result = z;
    } else {
        result = z;
    }

    result
}

pub fn min_3(x: isize, y: isize, z: isize) -> isize {
    let result;
    if x <= y && y <= z {
        result = x;
    } else if x <= z && z <= y {
        result = x;
    } else if y <= x && x <= z {
        result = y;
    } else if y <= z && z <= x {
        result = y;
    } else if z <= x && x <= y {
        result = z;
    } else {
        result = z;
    }

    result
}

pub fn min_u_3(x: usize, y: usize, z: usize) -> usize {
    let result;
    if x <= y && y <= z {
        result = x;
    } else if x <= z && z <= y {
        result = x;
    } else if y <= x && x <= z {
        result = y;
    } else if y <= z && z <= x {
        result = y;
    } else if z <= x && x <= y {
        result = z;
    } else {
        result = z;
    }

    result
}

pub fn read_text() -> String {
    let mut word = String::new();
    std::io::stdin().read_line(&mut word).ok();
    let answer = word.trim().to_string();

    answer
}

pub fn read_array() -> Vec<char> {
    let array: String = read();
    let chars: Vec<char> = array.trim().chars().collect::<Vec<char>>();
    chars
}

pub fn read<T: FromStr>() -> T {
    let stdin = stdin();
    let stdin = stdin.lock();
    let token: String = stdin
        .bytes()
        .map(|c| c.expect("failed to read char") as char)
        .skip_while(|c| c.is_whitespace())
        .take_while(|c| !c.is_whitespace())
        .collect();
    token.parse().ok().expect("failed to parse token")
}