#include <iostream>
#include <algorithm>
using namespace std;

int main(){
	int h, n;
	cin >> h >> n;
	int a[n];
	for(int i = 0; i < n - 1; i++) cin >> a[i];
	a[n - 1] = h;
	sort(a, a + n);
	reverse(a, a + n);
	for(int i = 0; i < n; i++) if(a[i] == h){
		int ans = i + 1;
		if(ans % 10 == 1){
			cout << ans << "st" << endl;
		}else if(ans % 10 == 2){
			cout << ans << "nd" << endl;
		}else if(ans % 10 == 3){
			cout << ans << "rd" << endl;
		}else{
			cout << ans << "th" << endl;
		}
		return 0;
	}
}