Palindromi

#include <bits/stdc++.h>
using namespace std;
typedef int64_t ll;
const int Q = 1e9+7;
const int O = 1e6;

char B[1000];
int N, K;

int main() {
    cin >> N >> K;
    for (int i=0; i < K; ++i) {
        B[i] = 'a';
    }
    for (int i=K-1; i < N; ++i) {
        B[i] = ('b' + (i-K)%25);
    }
    cout << B << '\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