#-*- coding:utf-8 -*-

if __name__ == "__main__":
    H, N = list(map(int, input().split()))
    ans = 1
    for i in range(N-1):
        if H < int(input()):
            ans += 1
    if ans == 1:
        print("{}st".format(ans))
    elif ans == 2:
        print("{}nd".format(ans))
    elif ans == 3:
        print("{}rd".format(ans))
    else:
        print("{}th".format(ans))