Submission #62270526

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Source Code Expand

use std::collections::BTreeSet;
#[allow(unused_imports)]
use itertools::Itertools;
use proconio::input;
use proconio::marker::Usize1;

fn main() {
    input!{
        n: usize,
        q: usize,
    }
    let mut set = BTreeSet::new();
    let mut count = vec![1; n];
    let mut pos = (0..n).collect_vec();

    for _ in 0..q {
        input! {
            t: u8,
        }
        if t == 1 {
            input! {
                p: Usize1,
                h: Usize1
            }
            let before = pos[p];
            count[before] -= 1;
            if count[before] == 1 {
                set.remove(&before);
            }

            pos[p] = h;
            count[h] += 1;
            if count[h] == 2 {
                set.insert(h);
            }

        } else {
            println!("{}", set.len());
        }
    }
}

pub trait Debuggable {
    fn debug_string(&self) -> String;
}

impl<T: std::fmt::Debug + std::fmt::Display> Debuggable for Vec<T> {
    fn debug_string(&self) -> String {
        use itertools::Itertools;
        use std::iter::repeat;
        if let Some(max_size) = self.iter()
            .enumerate()
            .map(|(i, x)| (format!("{:?}", x).len()).max(format!("{:?}", i).len()))
            .max() {
                let mut idx = String::from("idx |");   
                let mut val = String::from("val |");   
                for (i, xi) in self.iter().enumerate() {
                    idx.push_str(
                        &format!(" {:>w$} |", i, w=max_size)
                    );
                    val.push_str(
                        &format!(" {:>w$} |", xi, w=max_size)
                    );
                }

                format!("{}\n{}\n{}\n", idx, repeat('-').take(idx.len()).join(""), val)
            } else {
                format!("idx | \nval |\n")
            }
    }
}

impl<T: std::fmt::Debug + std::fmt::Display> Debuggable for std::collections::BTreeSet<T> {
    fn debug_string(&self) -> String {
        use itertools::Itertools;
        format!("{{ {} }}", self.iter().join(", "))
    }
}

impl<T, U> Debuggable for std::collections::BTreeMap<T, U> 
where T: std::fmt::Debug + std::fmt::Display, U: std::fmt::Debug + std::fmt::Display
{
    fn debug_string(&self) -> String {
        use itertools::Itertools;
        format!(
            "{{\n{}\n }}", self.iter()
                .map(|(k, v)| format!("{k} -> {v}, "))
                .join("\n")
        )
    }
}

// lg! マクロの定義
#[macro_export]
macro_rules! lg {
    ($val:expr) => {
        #[cfg(feature = "local")]
        {
            {
                use Debuggable;
                let val = &$val;
                eprintln!(
                    "[{}:{}] {} = \n{}",
                    file!(),
                    line!(),
                    stringify!($val),
                    val.debug_string()
                );
                val
            }
        }
    }
}
    

Submission Info

Compile Error

warning: the item `Itertools` is imported redundantly
  --> src/main.rs:49:13
   |
3  | use itertools::Itertools;
   |     -------------------- the item `Itertools` is already imported here
...
49 |         use itertools::Itertools;
   |             ^^^^^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(unused_imports)]` on by default

warning: the item `Itertools` is imported redundantly
  --> src/main.rs:75:13
   |
3  | use itertools::Itertools;
   |     -------------------- the item `Itertools` is already imported here
...
75 |         use itertools::Itertools;
   |             ^^^^^^^^^^^^^^^^^^^^

warning: the item `Itertools` is imported redundantly
  --> src/main.rs:84:13
   |
3  | use itertools::Itertools;
   |     -------------------- the item `Itertools` is already imported here
...
84 |         use itertools::Itertools;
   |             ^^^^^^^^^^^^^^^^^^^^

Judge Result