H,N = map(int,input().split())
tall = []
tall.append([-H,"nama"])

for x in range(N - 1):
    h = int(input())
    tall.append([-h,""])
tall.sort()
now = 1
for h,men in tall:
    if men == "nama":
        break
    now += 1
S = str(now)
if S[-1] == "1":
    print(S + "st")
elif S[-1] == "2":
    print(S + "nd")
elif S[-1] == "3":
    print(S + "rd")
else:
    print(S + "th")