time limit per test1 second
memory limit per test256 megabytes
inputstandard input
outputstandard output
In the beginning of the new year Keivan decided to reverse his name. He doesn't like palindromes, so he changed Naviek to Navick.
He is too selfish, so for a given n he wants to obtain a string of n characters, each of which is either 'a', 'b' or 'c', with no palindromes of length 3 appearing in the string as a substring. For example, the strings "abc" and "abca" suit him, while the string "aba" doesn't. He also want the number of letters 'c' in his string to be as little as possible.
Input
The first line contains single integer n (1 ≤ n ≤ 2·105) — the length of the string.
Output
Print the string that satisfies all the constraints.
If there are multiple answers, print any of them.
Examples
Input
2
Output
aa
Input
3
Output
bba
Note
A palindrome is a sequence of characters which reads the same backward and forward.
#include<cstdio>
#include<iostream>
using namespace std;
int main() {
int n;
cin >> n;
for (int i = 0; i < n; i++) {
if (i % 4 == 0 || i % 4 == 1) cout << 'a';
else cout << 'b';
}
printf("\n");
}