def hoge(a):
    ret = str(a)
    if a%10 == 1:
        ret += "st"
    elif a%10 == 2:
        ret += "nd"
    elif a%10 == 3:
        ret += "rd"
    else:
        ret += "th"
    return ret

H, N = map(int, input().split())
cnt = 1
for i in range(N-1):
    h = int(input())
    cnt += 1 if H < h else 0

print(hoge(cnt))