#include "bits/stdc++.h"
using namespace std;
using Graph = vector<vector<int>>;
typedef long long ll;
typedef pair<ll, ll> P;
#define rep(i,n) for (ll i = 0; i < (n); ++i)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
const long long mod = 1e9 + 7;

ll gcd(ll a, ll b) {
	return b ? gcd(b, a % b) : a;
}

ll lcm(ll a, ll b) {
	return a / gcd(a, b) * b;
}

int main() {
	ll h, n;
	cin >> h >> n;

	vector<ll> v(n);

	rep(i, n-1) {
		cin >> v[i];
	}
	v[n-1]=h;
	sort(rall(v));

	string ans="";

	rep(i, n) {
		if (v[i] == h) {
			ans+=to_string(i+1);
			break;
		}
	}

	if (ans[ans.size() - 1] == '1') {
		ans += "st";
	} else if (ans[ans.size() - 1] == '2') {
		ans += "nd";
	} else if (ans[ans.size() - 1] == '3') {
		ans += "rd";
	} else {
		ans+="th";
	}
	cout << ans << endl;
}