#include <stdlib.h>
#include <string.h>
#include <stdio.h>

int compare(const void *a,const void *b){
    return -1 * (*(int*)a - *(int*)b);
}

int main(void)
{
    int H,N;
    scanf("%d%d",&H,&N);
    int a[N-1],i;
    for (i = 0; i < N-1; i++) {
        scanf("%d",&a[i]);
    }
    i = 0;
    qsort(a, N - 1, sizeof(int), compare);
    while (H < a[i]) {
        i++;
    }
    if (i+1 == 1) {
        printf("1st\n");
    }else if (i+1 == 2) {
        printf("2nd\n");
    }else if (i+1 == 3) {
        printf("3rd\n");
    }else{
        printf("%dth\n",i+1);
    }
    return 0;
}