NH, N = map(int, input().split())
heights = [int(input()) for i in range(1, N)]
heights.append(NH)
heights.sort(reverse = True)

rank = heights.index(NH) + 1
ones = rank % 10
if ones == 1:
    print(rank + 'st')
elif ones == 2:
    print(rank + 'nd')
elif ones == 3:
    print(rank + 'rd')
else:
    print(rank + 'th')