Submission #59352145

---

Source Code Expand

use itertools::Itertools;
use proconio::{input, marker::Chars};

pub fn main() {
    input! {
        a4: [usize; 4]
    };
    let mut ans = 0;
    let mut c = vec![0; 5];
    for i in 0..4 {
        c[a4[i]] = c[a4[i]] + 1;
        if c[a4[i]] % 2 == 0 {
            ans += 1;
        }
    }
    println!("{}", ans);
}

Submission Info

Compile Error

warning: unused import: `itertools::Itertools`
 --> src/main.rs:1:5
  |
1 | use itertools::Itertools;
  |     ^^^^^^^^^^^^^^^^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

warning: unused import: `marker::Chars`
 --> src/main.rs:2:23
  |
2 | use proconio::{input, marker::Chars};
  |                       ^^^^^^^^^^^^^

Judge Result