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

int main(){
    int H,N, in,ans;
    vector<int> v;

    cin >> H >> N;
    while(cin >> in) v.push_back(in);
    sort(v.begin(), v.end(),greater<int>());
    for(int i=0;i<N;i++){
        if(v[i]<H){
            ans=i+1;
            break;
        }
    }
    cout << ans;
    if(ans%10==1) cout << "st";
    else if(ans%10==2) cout << "nd";
    else if(ans%10==3) cout << "rd";
    else cout << "th";
    cout << endl;

    return 0;
}