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

long long gcd(long long x, long long y)
{
    if (y == 0)
        return x;
    return gcd(y, x % y);
}

long long lcm(long long x, long long y)
{
    if (x == 0 || y == 0)
        return 0;
    return x / gcd(x, y) * y;
}

int main()
{
    int h, N;
    cin >> h >> N;
    vector<int> H(N);
    for (int i = 0; i < N; i++)
    {
        cin >> H[i];
    }
    H.push_back(h);
    N++;
    sort(H.begin(), H.end());
    for (int i = 0; i < N; i++)
    {
        if (H[i] != h)
            continue;

        if (i == 0)
            cout << "1st" << endl;
        else if (i == 1)
            cout << "2nd" << endl;
        else if (i == 2)
            cout << "3rd" << endl;
        else
            cout << i + 1 << "th" << endl;
        break;
    }
}