h,n = map(int,input().split())
H = [int(input()) for _ in range(n-1)]
H.append(h)
H.sort(reverse=True)
for i in range(n):
    if H[i]==h:
        if str(i)[-1]==0:
            print('{}st'.format(i+1))
        elif str(i)[-1]==1:
            print('{}nd'.format(i+1))
        elif str(i)[-1]==2:
            print('{}rd'.format(i+1))
        else:
            print('{}th'.format(i+1))
        break