#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

int main() {
    // input
    int H, N;
    cin >> H >> N;

    vector<int> h(N);
    for (int i = 0; i < N; ++i) {
        cin >> h[i];
    }

    // solve & output
    sort(h.begin(), h.end());
    if (h[N - 1] < H) {
        cout << "1st" << endl;
        return 0;
    } else if (h[N - 2] < H) {
        cout << "2nd" << endl;
        return 0;
    } else if (h[N - 3] < H) {
        cout << "3rd" << endl;
        return 0;
    } else {
        for (int i = N - 4; i >= 0; --i) {
            if (h[i] < H) {
                cout << i + 4 << "th" << endl;
                break;
            }
        }
    }

    return 0;
}