結果

問題 No.29 パワーアップ
コンテスト
ユーザー kenichi
提出日時 2023-04-11 18:10:26
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 1 ms / 5,000 ms
コード長 4,842 bytes
コンパイル時間 10,786 ms
コンパイル使用メモリ 400,196 KB
実行使用メモリ 7,716 KB
最終ジャッジ日時 2025-10-24 21:19:29
合計ジャッジ時間 11,939 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
other AC * 22
権限があれば一括ダウンロードができます

ソースコード

diff # 

use std::io::*;
use std::str::FromStr;
//use std::num;
//use std::cmp;
//use std::collections::VecDeque;

// const CHARSET: &str = "ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZ";
/*
struct User {
	nickname: String,
	old: usize,
	birth: String,
	state: String,
}
*/
fn main() {
	let n: usize = read();
	let mut a = vec![0; 3 * n];
	let mut count = 0;
	let mut tmp = 0;

	for _i in 0..a.len(){
		a[_i] = read();
	}

	for _i in 0..a.len(){
		for _j in 0..a.len(){
			if a[_i] == 0 || a[_j] == 0{
				continue;
			}else{
				//println!("i == {} | j == {}", _i, _j);

				if _i == _j{
					continue;
				}
				if a[_i] == a[_j]{
					count += 1;
					a[_i] = 0;
					a[_j] = 0;
					break;
				}
				//println!("count == {}",count);
			}
		}
	}

	for _i in 0..a.len(){
		if a[_i] != 0{
			tmp += 1;
		}
	}

	print!("{}",count + tmp / 4);
}

/*
fn main() {
	let class_room: usize = read();
	let mut n: Vec<String> = vec!["".to_string(); class_room];
	let mut o: Vec<usize> = vec![0; class_room];
	let mut b: Vec<String> = vec!["".to_string(); class_room];
	let mut s: Vec<String> = vec!["".to_string(); class_room];
	let mut users: Vec<User> = Vec::;

	for _i in 0..class_room {
		n[_i] = read();
		o[_i] = read();
		b[_i] = read();
		s[_i] = read();
	}

	for _i in 0..class_room {
	}

	for _i in 0..class_room {
		println!("User{{");
		println!("nickname : {}", users[_i].nickname);
		println!("old : {}", users[_i].old);
		println!("birth : {}", users[_i].birth);
		println!("state : {}", users[_i].state);
		println!("}}");
	}
}

*/

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 max_2(x: usize, y: usize) -> usize {
	let result;

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

	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 min(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 read_line() -> String {
	let mut s: String = String::new();
	std::io::stdin().read_line(&mut s).ok();

	s
}

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")
}

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

pub fn get_data() -> Vec<u64> {
	let mut s: String = String::new();
	std::io::stdin().read_line(&mut s).ok();
	let vec: Vec<u64> = s
		.trim()
		.split_whitespace()
		.map(|e| e.parse().ok().unwrap())
		.collect();

	vec
}

pub fn get_chars() -> Vec<char> {
	let mut s: String = String::new();
	std::io::stdin().read_line(&mut s).ok();

	let vec: Vec<char> = s.trim().chars().collect::<Vec<char>>();

	vec
}
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