Merkkijono

n = int(input())
alphabet = (['b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q'])
if n == 0:
    print('')
final = ['a']
for i in range(n):
    final.insert(0, alphabet[i])
    p = 0
    while p <= len(final)-3:
        if final[p] != final[p+2] and final[p] == alphabet[i]:
            final.insert(p+2, alphabet[i])
        p += 1
final.extend(list(reversed(final[:len(final) - 1:])))
for i in final:
    print(i, end='')

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: WRONG ANSWER

Test 11

Verdict: WRONG ANSWER

Test 12

Verdict: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: WRONG ANSWER

Test 15

Verdict: WRONG ANSWER

Test 16

Verdict: WRONG ANSWER