#include <iostream>
#include <cstring>

using namespace std;
const int XL = 50;
int main()
{

    int n,q=0; cin >> n;
    char k;

    char a[XL];
    char b[XL];

    cin >> a;

    for(int i =0; i < n-1; i++)
    {
        if (a[i+1] != k)
        {
            k = 0;
        }

        if (a[i] == a[i+1]|| a[i+1] == k)
        {

            k = a[i+1];
            a[i+1] = '0';


        }
    }

    for(int i =0; i < n; i++)
    {
        if(a[i] == '0')
        {
            q++;
        }

    }
    cout << endl << endl;

     for(int i =0; i < n; i++)
    {
        cout << a[i];

    }

cout << endl << endl;
    cout << q;







}