Merkkijono

#![allow(non_snake_case)]
 
fn main() {
    use std::io::stdin;
    let mut t = String::new();
    stdin().read_line(&mut t).unwrap();
    let zs = t.trim().parse::<i32>().unwrap();
    let mut ans: Vec<char> = vec![];
 
    for c in 0..zs {
        for _ in 0..ans.len() {
            ans.push((65 + c as u8) as char);
            ans.rotate_left(1);
        }
        ans.push((65 + c as u8) as char);
    }
    let realans: String = ans.into_iter().collect();
    println!("{}", realans.to_ascii_lowercase());
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED