#include<vector>
#include<iostream>
#include<algorithm>

using namespace std;

using ll = long long int;

class unionFind{
    int nodeSize;
    vector<int> parent;

public:
    unionFind(int n):nodeSize(n){
        parent = vector<int>(n+1,-1);
    }

    int getRoot(int a){
        if(parent[a] < 0){
            return a;
        }
        return parent[a] = getRoot(parent[a]);
    }

    bool isSameParent(int a,int b){
        return getRoot(a) == getRoot(b);
    }

    bool isRoot(int a){
        if(parent[a] < 0){
            return true;
        }
        return false;
    }

    void unite(int a,int b){
        if(isSameParent(a,b)){
            return;
        }
        int aParent = getRoot(a);
        int bParent = getRoot(b);

        if(abs(parent[aParent]) > abs(parent[bParent])){
            parent[aParent] += parent[bParent];
            parent[bParent] = aParent;
        }else{
            parent[bParent] += parent[aParent];
            parent[aParent] = bParent;
        }
    }
};

int main(){
    ll a,b;
    cin >> a >> b;

    a %= b;

    vector<ll> used(b,-1);
    ll idx = 1;
    ll endidx;
    ll swidx;
    ll t = a;

    used[a] = 0;

    while(true){
        t *= a;
        t %= b;
        if(used[t] >= 0){
            endidx = idx;
            swidx = used[t];
            break;
        }else{
            used[t] = idx;
        }
        idx++;
    }

    string S,T;
    for(int i = 0; i <= endidx; i++){
        S += 'a';
        T += 'a';
    }

    S[swidx] = 'b';
    T[endidx] = 'b';

    cout << S << endl;
    cout << T << endl;


    return 0;
}