#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

using ull = unsigned long long;
vector<ll>rolling_hash_search(string s,string t){
    vector<long long >index_list;
    ll SL=s.size();
    ll TL=t.size();

    ull b=1e8+7;
    ull a=1;
    for (int i = 0; i < TL; i++)
    {
        a*=b;
    }
    ull s_hash = 0;
    for (int i = 0; i < TL; i++)
    {
        s_hash=s_hash*b+s[i];
    }
    ull t_hash=0;
    for (int i = 0; i < TL; i++)
    {
        t_hash=t_hash*b+t[i];
    }
    for (int i = 0; i < SL-TL+1; i++)
    {
        if(s_hash==t_hash) index_list.push_back(i);
        if(i+TL<SL) s_hash=s_hash*b-s[i]*a+s[i+TL];
    }
    return index_list;
}

int main(){
  int a,b;
  cin>>a>>b;
  string s,t;
  ll cnt=0;
  int d=0;
  for (int i = 1; i <=25; i++)
  {     
      cnt=0;
      ll copy=a;
      bool flag=false;
      while(1){
        if(cnt>=1e5) break;
        copy*=copy;
        if(copy*i%b==0) {
            flag=true;
            d=i;
            break;
        }
        cnt++;
      }
      if(flag) break;
  }
  s.push_back('a');
  t.push_back('a'+d);
  for (int i = 0; i < cnt; i++)
  {
      s.push_back('a');
      t.push_back('a');
  }
  
  cout<<s<<endl;
  cout<<t<<endl;
    return 0;
}