Palindromi

#include <bits/stdc++.h>

using namespace std;

int n, k;
string s;


int main() {

    cin >> n >> k;

    for (int i =0; i<k; ++i) {
        s.push_back('a');
    }   

    int j = 1;
    for (int i = 0; i < (n-k); ++i) {
        s.push_back('a'+j);
        if ('a'+j == 'z') j = 1;
        if (i >= k-2) j++;
    }

    cout << s << endl;

    return 0;
}

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