#include <bits/stdc++.h>
#define REP(i, n) for(int i = 0; i < n; i++)
#define REPR(i, n) for(int i = n; i >= 0; i--)
#define FOR(i, m, n) for(int i = m; i < n; i++)
#define INF 2e9
#define ALL(v) v.begin(), v.end()
using namespace std;
typedef long long ll;
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    
    int h, n;
    cin >> h >> n;
    vector<int> a(n-1);
    REP(i, n - 1)
    {
        cin >> a[i];
    }

    sort(ALL(a), greater<int>());

    int junni = n;
    REP(i, n - 1)
    {
        if(h > a[i])
        {
            junni = i + 1;
            break;
        }

    }

    string matsubi = "th";

    if(junni == 1){
        matsubi = "st";
    }else if(junni == 2)
    {
        matsubi = "nd";
    }else if(junni == 3)
    {
        matsubi = "rd";
    }
    cout << junni << matsubi << endl;
}