Palindromi

use std::io;
fn main() {
    let mut input = String::new();
    let stdin = io::stdin();
    stdin.read_line(&mut input).unwrap();
    let input = input.trim();
    let jono: Vec<char> = input.chars().collect();

    let mut a: usize = 0;
    let mut b = jono.len() - 1;
    let mut res = 0;

    loop {
        if a >= b {
            break;
        }
        if jono[a] != jono[b] {
            res += 1;
        }
        a += 1;
        b -= 1;
    }
    println!("{res}");
}

Test 1 (public)

Verdict: ACCEPTED

Test 2 (public)

Verdict: ACCEPTED

Test 3 (public)

Verdict: ACCEPTED

Test 4 (public)

Verdict: ACCEPTED

Test 5 (public)

Verdict: ACCEPTED

Test 6 (public)

Verdict: ACCEPTED

Test 7 (public)

Verdict: ACCEPTED

Test 8 (public)

Verdict: ACCEPTED

Test 9 (public)

Verdict: ACCEPTED

Test 10 (public)

Verdict: ACCEPTED