h, n = map(int, input().split(" "))
# l = [int(input()) for i in range(n)]
l = [h]

for i in range(n-1):
    a = int(input())
    l.append(a)
l.sort(reverse=True)
ans = n
for i in range(n):
    if l[i] == h:
        ans = i+1

ans = str(ans)
if ans == "1":
    ans += "st"
elif ans == "2":
    ans += "nd"
elif ans == "3":
    ans += "rd"
else:
    ans += "th"
print(ans)