leetcode1374

class Solution:
    def generateTheString(self, n: int) -> str:
        if n == 1:
            return 'a'
        elif n == '2':
            return 'ab'
        else:
            if n % 2 == 0:
                return 'a' * (n-1) + 'b'
            else:
                return 'a' * (n-2) + 'bc'