結果

問題 No.1036 Make One With GCD 2
ユーザー phspls
提出日時 2023-01-23 03:15:54
言語 Rust
(1.83.0 + proconio)
結果
TLE  
(最新)
AC  
(最初)
実行時間 -
コード長 2,428 bytes
コンパイル時間 15,375 ms
コンパイル使用メモリ 379,672 KB
実行使用メモリ 89,344 KB
最終ジャッジ日時 2024-06-25 03:31:42
合計ジャッジ時間 34,269 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge4
このコードへのチャレンジ
（要ログイン）
ファイルパターン 結果
sample AC * 4
other AC * 40 TLE * 1
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: method `find_closed` is never used
  --> src/main.rs:38:8
   |
8  | / impl<T, F> SparseTable<T, F> where
9  | | T: std::fmt::Debug + Copy,
10 | | F: Fn(T, T) -> T,
   | |_________________- method in this implementation
...
38 |       fn find_closed(&self, l: usize, r: usize) -> T {
   |          ^^^^^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default

ソースコード

diff #
プレゼンテーションモードにする

#[derive(Debug, Clone)]
struct SparseTable<T, F> {
    vals: Vec<Vec<T>>,
    operator: F,
}
impl<T, F> SparseTable<T, F> where
T: std::fmt::Debug + Copy,
F: Fn(T, T) -> T,
{
    fn new(v: &Vec<T>, unit: T, operator: F) -> Self {
        let size = usize::max_value().count_ones() - v.len().leading_zeros();
        let size = size as usize;
        let limit = 1usize << size;
        let mut vals = Vec::with_capacity(size+1);
        vals.push(vec![unit; limit]);
        for i in 0..v.len() {
            vals[0][i] = v[i];
        }
        for i in 1..=size {
            let length = 1usize << i;
            let jsize = limit+1-length;
            vals.push(vec![unit; jsize]);
            for start in 0..jsize {
                let left = start;
                let right = start + (1usize << (i-1));
                vals[i][start] = operator(vals[i - 1][left], vals[i - 1][right]);
            }
        }
        Self {
            vals,
            operator
        }
    }
    fn find_closed(&self, l: usize, r: usize) -> T {
        self.find(l, r+1)
    }
    fn find(&self, l: usize, r: usize) -> T {
        let length = r - l;
        if length == 1 {
            return self.vals[0][l];
        }
        let idx = usize::max_value().count_ones() - length.leading_zeros() - 1;
        let idx = idx as usize;
        let left = self.vals[idx][l];
        let right = self.vals[idx][r - (1usize << idx)];
        (self.operator)(left, right)
    }
}
fn gcd(a: usize, b: usize) -> usize {
    if b == 0 { return a; }
    gcd(b, a%b)
}
fn main() {
    let mut n = String::new();
    std::io::stdin().read_line(&mut n).ok();
    let n: usize = n.trim().parse().unwrap();
    let mut a = String::new();
    std::io::stdin().read_line(&mut a).ok();
    let a: Vec<usize> = a.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let sparse_table = SparseTable::new(&a, 0usize, |x, y| gcd(x, y));
    let mut result = 0usize;
    for i in 0..n {
        if a[i] == 1 {
            result += n - i;
            continue;
        }
        let mut lower = i+1;
        let mut upper = n;
        while upper > lower {
            let middle = (upper + lower + 1) / 2;
            if sparse_table.find(i, middle) > 1 {
                lower = middle;
            } else {
                upper = middle - 1;
            }
        }
        result += n - upper;
    }
    println!("{}", result);}
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
0