num = input().rstrip().split(" ")
a = int(num[0])
b = int(num[1])
c = [a]

for i in range(b - 1):
    d = input().rstrip()
    c.append(int(d))
c = sorted(c)
e = str(b - c.index(a))
if int(e) % 10 == 1:
    print(e + "st")
elif int(e) % 10 == 2:
    print(e + "nd")
elif int(e) % 10 == 3:
    print(e + "rd")
else:
    print(e + "th")