#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using namespace std;
using ll = long long ;
using P = pair<int,int> ;
using pll = pair<long long,long long>;
constexpr int INF = 1e9;
constexpr long long LINF = 1e17;
constexpr int MOD = 1000000007;

int main(){
    int h,n;
    cin >> h >> n;
    vector<int> H(n-1);
    rep(i,n-1) cin >> H[i];
    sort(H.begin(),H.end());
    int ans = lower_bound(H.begin(),H.end(),h) - H.begin();
    ans = n - ans;
    if(ans==1) cout << ans << "st" << endl;
    else if(ans==2) cout << ans << "nd" << endl;
    else if(ans==3) cout << ans << "rd" << endl;
    else cout << ans << "th" << endl;
    return 0;
}