H,N=map(int,input().split())
X=[0]*N
X[0]=H
for _ in range(1,N):
    X[_]=int(input())
X.sort(reverse=True)
for i in range(N):
    if H==X[i]:
        if i==0: print("1st");exit()
        elif i==1: print("2nd");exit()
        elif i==2: print("3rd");exit()
        else: print(str(i+1)+"th");exit()