H,N=map(int,input().split())
h=[int(input()) for i in range(N-1)]
h.sort(reverse=True)
flag=False
#print(h)
for index,i in enumerate(h):
    if i <=H:
        ans=index+1
        flag=True
        break
        
if not flag:
    ans=N

if ans%10==1:
    suffix='st'
elif ans%10==2:
    suffix='nd'
elif ans%10==3:
    suffix='rd'
else:
    suffix='th'
print(str(ans)+suffix)