def main():
    H, N = map(int, input().split())
    A = [int(input()) for i in range(N-1)]
    A = sorted(A+[H], reverse=True)
    pref = ['st', 'nd', 'rd'] + ['th']*7
    print(f'{A.index(H)+1}{pref[A.index(H)%10]}')


if __name__ == '__main__':
    main()