#include <fstream>
#include <algorithm>

using namespace std;

ifstream fin("litere.in");
ofstream fout("litere.out");

int n, ans;
string v, s;

int main() {
    fin >> n;
    fin >> v;
    fin.close();
    v = s;
    sort(v.begin(), v.end());
    fout << v << " " << s << "\n";
    while(s != v) {
        for(int i = 0; i < n - 1; i++) {
            if(s[i] > s[i + 1]) {
                swap(s[i], s[i + 1]);
                ans++;
            }
        }
    }
    fout << ans;
    return 0;
}