#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <bitset>
#include <cstdio>
#include <string>
#include <iomanip>
#include <cstring>
#include <cmath>
#include <vector>
#include <algorithm>
#include <unordered_map>
#include <unordered_set>
#include <map>
#include <set>
#include <queue>
#include <stack>
#define lowbit(x) x&(-x)
#define pi 3.14159265358
#define lc k<<1;
#define rc k<<1|1
#define ppb push_back
#define mod 1000000007
#define fori(i,l,r) for(int i=l;i<=r;i++)
#define forj(j,l,r) for(int j=l;j<=r;j++)
typedef long long ll;
using namespace std;
const int N = 2e5 + 100;
ll t, n, m;
void ac(){
	cout << "kangnaixin";
}
int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	t = 1;
	while (t--){
		ac();
	}
	return 0;
}