#include<bits/stdc++.h>
using namespace std;
#define vi vector<int>
#define pb push_back
#define P pair<int,int>
#define PP pair<P,int>
#define fi first
#define se second
#define INF 1e9
#define MOD 1000000007
int main(){
    int n,m;
    cin>>n>>m;
    int ans=1;
    for(int i=0;i<m-1;i++){
        int t;
        cin>>t;
        if(t>n){
            ans++;
        }
    }
    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;
}