#include<iostream>
#include<string>
#include<cstring>
#include<complex>
#include<vector>
#include<algorithm>
using namespace std;

#define REP(i, j) for (int i = 0; i < (int)j; ++i)
#define FOR(i, j, k) for (int i = (int)j; i < (int)k; ++i)
#define SORT(v) sort(v.begin(), v.end())
#define REVERSE(v) reverse(v.begin(), v.end())
typedef complex<double> P;
typedef vector<int> VI;
typedef long long LL;
typedef pair<int,int> PII;

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

	int h, n;
	cin >> h >> n;
	VI hs;
	REP(i,n-1) {
		int high;
		cin >> high;
		hs.push_back(high);
	}
	sort(hs.begin(), hs.end(), greater<int>());

	bool isWorst = true;
	REP(i,hs.size()) {
		if (hs[i] < h) {
			string suff = "th";
			switch((i+1)%10) {
				case 1: suff = "st"; break;
				case 2: suff = "nd"; break;
				case 3: suff = "rd"; break;
			}
			cout << to_string(i+1) + suff << endl;
			isWorst = false;

			break;
		}
	}
	if (isWorst) {
		string suff = "th";
		switch(n) {
			case 1: suff = "st"; break;
			case 2: suff = "nd"; break;
			case 3: suff = "rd"; break;
		}
		cout << to_string(n) + suff << endl;
	}

	return 0;
}