def func(x): temp = [] for i in range(1,x): if x % i == 0: temp.append(i) else: continue y = 0 for i in temp: y += i if x == y: return True else: return False while True: try: n = int(input()) s = [] for i in range(1, n+1) : if func(i): s.append(i) else: continue print(len(s)) except: break