S=input().split(' ')
H=int(S[0])
N=int(S[1])

T=[]
for i in range(N-1):
    T.append(input())

rank=0

for i in range(N-1):
    if(H < int(max(T))):
       rank=rank+1
       T.remove(max(T))
       if(i==N-2):
          print(rank+1,end='')
          if( (rank+1) % 10 == 1):
              print('st')
          if( (rank+1) % 10 == 2):
              print('nd')
          if( (rank+1) % 10 == 3):
              print('rd')
          else:
              print('th')
    
    else:
       print(rank+1,end='')
       if( (rank+1) % 10 ==1):
           print('st')
           break
       if( (rank+1) % 10 == 2):
               print('nd')
               break
       if( (rank+1) % 10 == 3):
               print('rd')
               break
       else:
               print('th')
               break