#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
int main(){
    int H,N,rank;
    cin >> H >> N;
    vector<int> Hs(N);Hs[0]=0;
    for(int i=1;i<N;i++)cin >> Hs[i];
    sort(Hs.begin(),Hs.end());
    for(rank=1;rank<=N;rank++){
        if(H>Hs[N-rank])break;
    }
    cout << rank;switch(rank%10){
        case 1:cout << "st";break;
        case 2:cout << "nd";break;
        case 3:cout << "rd";break;
        default:cout << "th";
    }cout << endl;
    return 0;
}