h,n=map(int,input().split());c=0
H=sorted([int(input())for _ in range(n-1)])[::-1]
for i in range(n-1):
    if H[i]>h:
        c+=1
    else:
        break
if str(c+1)[-1]=='1':
    print(str(c+1)+'st')
elif str(c+1)[-1]=='2':
    print(str(c+1)+'nd')
elif str(c+1)[-1]=='3':
    print(str(c+1)+'rd')
else:
    print(str(c+1)+'th')