#include <iostream>

using namespace std;

int main()
{
    string napis = "deffbaa";

    int n = sizeof(napis);


    do{
        for(int i=0;i<n-1;i++)
        {
            char a = napis[i]+'0';
            char b = napis[i+1]+'0';
            int int_a = (int)a;
            int int_b = (int)b;

            if(int_a>int_b)
            {
                int pom=napis[i];
                napis[i] = napis[i+1];
                napis[i+1] = pom;
            }
        }
        n--;
    }while(n>1);

    cout<<napis;
    return 0;
}