結果
| 問題 |
No.546 オンリー・ワン
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2017-10-12 18:52:19 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
AC
|
| 実行時間 | 4 ms / 2,000 ms |
| コード長 | 3,057 bytes |
| コンパイル時間 | 13,520 ms |
| コンパイル使用メモリ | 379,796 KB |
| 実行使用メモリ | 5,248 KB |
| 最終ジャッジ日時 | 2024-11-17 10:53:50 |
| 合計ジャッジ時間 | 13,987 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 7 |
ソースコード
#[allow(unused_imports)]
use std::cmp::{max, min};
#[allow(unused_imports)]
use std::collections::{HashMap, HashSet};
mod util {
use std::io::stdin;
use std::str::FromStr;
use std::fmt::Debug;
#[allow(dead_code)]
pub fn line() -> String {
let mut line: String = String::new();
stdin().read_line(&mut line).unwrap();
line.trim().to_string()
}
#[allow(dead_code)]
pub fn get<T: FromStr>() -> T
where
<T as FromStr>::Err: Debug,
{
let mut line: String = String::new();
stdin().read_line(&mut line).unwrap();
line.trim().parse().unwrap()
}
#[allow(dead_code)]
pub fn gets<T: FromStr>() -> Vec<T>
where
<T as FromStr>::Err: Debug,
{
let mut line: String = String::new();
stdin().read_line(&mut line).unwrap();
line.split_whitespace()
.map(|t| t.parse().unwrap())
.collect()
}
#[allow(dead_code)]
pub fn get2<T: FromStr, U: FromStr>() -> (T, U)
where
<T as FromStr>::Err: Debug,
<U as FromStr>::Err: Debug,
{
let mut line: String = String::new();
stdin().read_line(&mut line).unwrap();
let mut iter = line.split_whitespace();
(
iter.next().unwrap().parse().unwrap(),
iter.next().unwrap().parse().unwrap(),
)
}
#[allow(dead_code)]
pub fn get3<S: FromStr, T: FromStr, U: FromStr>() -> (S, T, U)
where
<S as FromStr>::Err: Debug,
<T as FromStr>::Err: Debug,
<U as FromStr>::Err: Debug,
{
let mut line: String = String::new();
stdin().read_line(&mut line).unwrap();
let mut iter = line.split_whitespace();
(
iter.next().unwrap().parse().unwrap(),
iter.next().unwrap().parse().unwrap(),
iter.next().unwrap().parse().unwrap(),
)
}
}
#[allow(unused_macros)]
macro_rules! debug {
($x: expr) => {
println!("{}: {:?}", stringify!($x), $x)
}
}
fn gcd(a: usize, b: usize) -> usize {
if b == 0 { a } else { gcd(b, a % b) }
}
fn lcm(a: usize, b: usize) -> usize {
a * b / gcd(a, b)
}
fn n_d(l: usize, r: usize, d: usize) -> usize {
r / d - (l - 1) / d
}
fn main() {
let (_n, l, h): (usize, usize, usize) = util::get3();
let c: Vec<usize> = util::gets();
let mut ans = 0;
for i in 0..c.len() {
let d = c[i];
let others: Vec<usize> = (0..c.len()).filter(|&k| k != i).map(|k| c[k]).collect();
let mut a = 0i64;
for k in 0..1 << others.len() {
let mut m = d;
let mut bits = 1;
for j in 0..others.len() {
if k >> j & 1 == 1 {
bits += 1;
m = lcm(m, others[j]);
}
}
if bits % 2 == 0 {
a -= n_d(l, h, m) as i64;
} else {
a += n_d(l, h, m) as i64;
}
}
ans += a;
}
println!("{}", ans);
}