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

int main() {
    int h, n;
    cin >> h >> n;
    vector<int> a(n);
    for (int &e : a) cin >> e;
    
    sort(a.begin(), a.end());
    
    int ans = 1 + (a.end() - upper_bound(a.begin(), a.end(), h));
    if (ans == 1) cout << ans << "st" << '\n';
    else if (ans == 2) cout << ans << "nd" << '\n';
    else if (ans == 3) cout << ans << "rd" << '\n';
    else cout << ans << "th" << '\n';
    return 0;
}