hight = []
H,N = map(int,input().split())
for i in range(N-1):
    hight.append(int(input()))
hight.append(H)
hight.sort()
hight.reverse()
ans = str(hight.index(H)+1)
if ans[-1]=="1":
    print(ans+"st")
elif ans[-1]=="2":
    print(ans+"nd")
elif ans[-1]=="3":
    print(ans+"rd")
else:
    print(ans+"th")