#define _USE_MATH_DEFINES
 
#include <iostream>
#include <iomanip>
#include <sstream>
 
#include <algorithm>
#include <cmath>
 
#include <string>
#include <queue>
#include <vector>
#include <complex>
#include <set>
#include <map>
#include <stack>
#include <list>

#include <valarray>

//#include <random>//xAOJ
/////////
#define REP(i, x, n) for(int i = x; i < n; i++)
#define rep(i,n) REP(i,0,n)
#define P(p) cout<<(p)<<endl;
 
#define PII pair<int,int>
/////////
typedef long long LL;
typedef long double LD;
typedef unsigned long long ULL;
/////////
using namespace::std;
/////////
/////////
unsigned long long get_hash(string s, unsigned long long a, unsigned long long b){
	unsigned long long hash = 0;

	for(unsigned int i = 0; i < s.size(); i++){
		hash = (hash * a + s[i]) % b;
	}

	return hash;
}

void solve(){
	LL AA,BB;
	cin >> AA >> BB;
	map<unsigned long long,string> hhit;
	int maxlen = 10000;
	unsigned long long hvalue;
	map<unsigned long long,string>::iterator it;
	for(;;){
		string str(maxlen,'a');
		for(int i=0;i<maxlen;++i){
			str[i] = 'a' + rand()%26;
		}
		hvalue = get_hash(str,AA,BB);
		
		it = hhit.find( hvalue );
		if( it != hhit.end() ){
			cout << hhit[hvalue] << endl;
			cout << str << endl;
			return;
		}else{
			hhit[hvalue] = str;
		}
	}
}

int main(void){
    std::cin.tie(0); 
    std::ios::sync_with_stdio(false);
    std::cout << std::fixed;//
    cout << setprecision(16);//
	
	//cpp
	solve();
	return 0;
}