#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define endl "\n"
#define rep(i, a, n) for (int i = a; i < n; ++i)

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int h, n;
    cin >> h >> n;
    vector<int> hi(n - 1);
    rep(i, 0, n - 1) cin >> hi[i];

    sort(hi.begin(), hi.end());
    reverse(hi.begin(), hi.end());
    if (hi[0] < h) {
        cout << "1st" << endl;
        return 0;
    } else if (hi[1] < h) {
        cout << "2nd" << endl;
        return 0;
    } else if (hi[2] < h) {
        cout << "3rd" << endl;
        return 0;
    } else {
        rep(i, 3, n - 1) {
            if (hi[i] < h) {
                cout << i << "th" << endl;
                return 0;
            }
        }
    }
    cout << n << "th" << endl;
    return 0;
}