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

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int N; cin >> N;
    string s; cin >> s;
    sort(s.rbegin(),s.rend());
    cout << s << endl;
    vector<int> C(26);
    for(auto c : s) C.at(c-'a')++;

    string yuki = "yuki";
    yuki += 'a'-1;

    int answer = C.at(25);
    C.at(25) = 0;
    int low = 0,high = C.at(24)+1;
    while(high-low > 1){
        int mid = (high+low)/2;
        auto D = C;
        int left = mid; D.at(24) -= mid; 
        for(int c=1; c<5; c++){
            int p1 = yuki.at(c-1)-'a',p2 = yuki.at(c)-'a';
            for(int p=p2+1; p<=p1; p++){
                left -= D.at(p);
                if(left <= 0){left = 0; break;}
            }
            if(c == 4 || left > D.at(p2) || left <= 0) break;
            D.at(p2) -= left;            
        }
        if(left == 0) low = mid;
        else high = mid;
    }  
    answer += low;
    cout << answer << endl;
}