a,b = map(int,input().split())
l = [a] + [int(input()) for _ in range(b - 1)]
l = sorted(l)[::-1]
for i,p in enumerate(l):
    if p == a:
        print(i+1,end='')
        if i % 10 == 0:
            print('st')
        elif i % 10 == 1:
            print('nd')
        elif i % 10 == 2:
            print('rd')
        else:
            print('th')
        exit()