Palindromi

#include <bits/stdc++.h>

using namespace std;
using ll = int64_t;

int main() {
    ll n, k;
    cin >> n >> k;

    string t = "abcdefghijklmnopqrstuxyzwabcdefghijklmnopqrstuxyzwabcdefghijklmnopqrstuxyzwabcdefghijklmnopqrstuxyzwabcdefghijklmnopqrstuxyzwabcdefghijklmnopqrstuxyzw";

    for(ll i = 0; i < k; i++)
        cout << "w";
    for(ll i = 0; i < n - k; i++)
        cout << t[i];
    
    cout << "\n";
}

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

Test 17

Verdict: ACCEPTED