from pprint import pprint
import bisect
def main():
    h,n=map(int,input().split())
    l=[]
    for i in range(n-1):
        l.append(int(input()))
    l.sort()
    ans=len(l)-bisect.bisect_left(l,h)+1
    if ans%10==1:
        print(f"{ans}st")
    elif ans%10==2:
        print(f"{ans}nd")
    elif ans%10==3:
        print(f"{ans}rd")
    else:
        print(f"{ans}th")
if __name__ == "__main__":
    main()