Palindromi

#include <bits/stdc++.h>
#define int long long
using namespace std;

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

    for (int i = 0; i < k; ++i) {
        cout << 'a';
    }
    for (int i = 0; i < n-k; ++i) {
        if (i % 3 == 0)
            cout << 'b';
        else if (i % 3 == 1)
            cout << 'c';
        else
            cout << 'd';
    }
}

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