H,N=(int(i) for i in input().split())
c=0
for i in range(N):
    g=int(input())
    if g>H:
        c+=1
S=str(g)
S=S[-1]
if S=="1":
    d="st"
elif S=="2":
    d=="nd"
elif S=="3":
    d=="rd"
else:
    d=="th"
print(S+d)