#1022579 (Rust) No.2947 Sing a Song

提出ソース

結果

問題	No.2947 Sing a Song
ユーザー	Moss_Local
提出日時	2024-10-25 22:00:08
言語	Rust (1.77.0 + proconio)
結果	RE
実行時間	-
コード長	7,596 bytes
コンパイル時間	13,072 ms
コンパイル使用メモリ	401,864 KB
実行使用メモリ	6,948 KB
最終ジャッジ日時	2024-10-25 22:01:28
合計ジャッジ時間	16,483 ms
ジャッジサーバーID （参考情報）	judge2 / judge5

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 6,816 KB
testcase_02	AC	1 ms 6,944 KB
testcase_03	AC	1 ms 6,944 KB
testcase_04	RE	-
testcase_05	RE	-
testcase_06	AC	2 ms 6,944 KB
testcase_07	AC	2 ms 6,944 KB
testcase_08	RE	-
testcase_09	RE	-
testcase_10	RE	-
testcase_11	RE	-
testcase_12	RE	-
testcase_13	RE	-
testcase_14	AC	2 ms 6,944 KB
testcase_15	RE	-
testcase_16	AC	2 ms 6,944 KB
testcase_17	RE	-
testcase_18	RE	-
testcase_19	RE	-
testcase_20	AC	12 ms 6,944 KB
testcase_21	AC	3 ms 6,940 KB
testcase_22	AC	8 ms 6,940 KB
testcase_23	AC	19 ms 6,940 KB
testcase_24	AC	22 ms 6,940 KB
testcase_25	RE	-
testcase_26	AC	20 ms 6,944 KB
testcase_27	AC	53 ms 6,940 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: variable does not need to be mutable
   --> src/main.rs:119:9
    |
119 |     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:125:9
    |
125 |     let mut vec: Vec<i64> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:130:9
    |
130 |     let mut vec: Vec<usize> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:136:9
    |
136 |     let mut vec: Vec<f64> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:141:9
    |
141 |     let mut vec: Vec<char> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:146:9
    |
146 |     let mut vec: Vec<usize> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:151:9
    |
151 |     let mut vec: Vec<i64> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:157:9
    |
157 |     let mut vec: Vec<usize> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:294:9
    |
294 |     let mut vec: Vec<String> = read_vec();
    |         ----^^^
    |         |
    |         help: remove this `mut`

warning: variable does not need to be mutable
   --> src/main.rs:295:9
    |
295 |     let mut a: Vec<usize> = read_vec();
    |

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 core::num;
use std::cmp::*;
use std::fmt::*;
use std::hash::*;
use std::io::BufRead;
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
        }
    };
}

//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])
}

pub struct Dsu {
    n: usize,
    // root node: -1 * component size
    // otherwise: parent
    parent_or_size: Vec<i32>,
}

impl Dsu {
    // 0 <= size <= 10^8 is constrained.
    pub fn new(size: usize) -> Self {
        Self {
            n: size,
            parent_or_size: vec![-1; size],
        }
    }
    pub fn merge(&mut self, a: usize, b: usize) -> usize {
        assert!(a < self.n);
        assert!(b < self.n);
        let (mut x, mut y) = (self.leader(a), self.leader(b));
        if x == y {
            return x;
        }
        if -self.parent_or_size[x] < -self.parent_or_size[y] {
            std::mem::swap(&mut x, &mut y);
        }
        self.parent_or_size[x] += self.parent_or_size[y];
        self.parent_or_size[y] = x as i32;
        x
    }

    pub fn same(&mut self, a: usize, b: usize) -> bool {
        assert!(a < self.n);
        assert!(b < self.n);
        self.leader(a) == self.leader(b)
    }
    pub fn leader(&mut self, a: usize) -> usize {
        assert!(a < self.n);
        if self.parent_or_size[a] < 0 {
            return a;
        }
        self.parent_or_size[a] = self.leader(self.parent_or_size[a] as usize) as i32;
        self.parent_or_size[a] as usize
    }
    pub fn size(&mut self, a: usize) -> usize {
        assert!(a < self.n);
        let x = self.leader(a);
        -self.parent_or_size[x] as usize
    }
    pub fn groups(&mut self) -> Vec<Vec<usize>> {
        let mut leader_buf = vec![0; self.n];
        let mut group_size = vec![0; self.n];
        for i in 0..self.n {
            leader_buf[i] = self.leader(i);
            group_size[leader_buf[i]] += 1;
        }
        let mut result = vec![Vec::new(); self.n];
        for i in 0..self.n {
            result[i].reserve(group_size[i]);
        }
        for i in 0..self.n {
            result[leader_buf[i]].push(i);
        }
        result
            .into_iter()
            .filter(|x| !x.is_empty())
            .collect::<Vec<Vec<usize>>>()
    }
}
fn extended_gcd(a: isize, b: isize) -> (isize, isize, isize) {
    if b == 0 {
        (a.abs(), a.signum(), 0)
    } else {
        let (gcd, x1, y1) = extended_gcd(b, a % b);
        (gcd, y1, x1 - (a / b) * y1)
    }
}

fn find_max_x(a: usize, b: usize, v: usize) -> Option<(usize, usize)> {
    use std::convert::TryFrom;

    // Convert usize to isize for calculations with negative numbers
    let (a, b, v) = (
        isize::try_from(a).ok()?,
        isize::try_from(b).ok()?,
        isize::try_from(v).ok()?,
    );

    // Compute gcd and initial x0, y0 using extended Euclidean algorithm
    let (d, mut x0, mut y0) = extended_gcd(a, b);

    // Check if v is divisible by gcd(a, b)
    if v % d != 0 {
        return None; // No solution exists
    }

    // Scale the solution to match v = a * x + b * y
    let k = v / d;
    x0 *= k;
    y0 *= k;

    // Compute the steps to adjust x and y
    let a_div_d = a / d;
    let b_div_d = b / d;

    // Find the range of t where x and y are non-negative
    // x = x0 + (b / d) * t >= 0
    // y = y0 - (a / d) * t >= 0

    // Compute t_min and t_max
    let t_min = (-x0 + b_div_d - 1) / b_div_d;
    let t_max = y0 / a_div_d;

    if t_min > t_max {
        return None; // No t satisfies both conditions
    }

    // To maximize x, we take t = t_max
    let t = t_max;

    // Compute the final x and y
    let x = x0 + b_div_d * t;
    let y = y0 - a_div_d * t;

    // Ensure x and y are non-negative
    if x >= 0 && y >= 0 {
        Some((x as usize, y as usize))
    } else {
        None
    }
}

fn main() {
    let n: usize = read();
    let mut vec: Vec<String> = read_vec();
    let mut a: Vec<usize> = read_vec();
    for i in 0..n {
        let mut x = a[i];
        let mut n1 = vec[0].len();
        let mut n2 = vec[1].len();
        let val = find_max_x(n1, n2, x);
        let v1 = val.unwrap().0;
        let v2 = val.unwrap().1;
        for j in 0..v1 {
            if j != 0 {
                print!(" ");
            }
            print!("{}", vec[0]);
        }
        for j in 0..v2 {
            if !(n1 == 0 && j == 0) {
                print!(" ");
            }
            print!("{}", vec[1]);
        }
        println!();
    }
    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