#include <iostream>
using namespace std;
int main(){
    int h,n;cin>>h>>n;
    int nw  = 1;
    for(int i = 0; n-1 > i; i++){
        int z;cin>>z;
        if(h <= z){
            nw++;
        }
    }
    if(nw == 1){
        cout << "1st" << endl;
    }else if(nw == 2){
        cout << "2nd" << endl;
    }else if(nw == 3){
        cout << "3rd" << endl;
    }else{
        cout << nw << "th" << endl;
    }
}