m,n=map(int,input().split())
f=lambda:int(input())
h=[f() for i in range(n-1)]
h+=[m]

srt=sorted(h)[::-1]
r=srt.index(m)+1
bi='st' if r%10==1 else 'nd' if r%10==2 else 'rd' if r%10==3 else 'th'
print(str(r)+bi)