#正常思路
```a = int(input())
def abc(x):
b = []
for i in range(1,x):
if x%i ==0:
b.append(i)
c = 0
for j in b:
c += j
if c == x:
return True
else:
return False
d = 0
for k in range(1,a+1):
if abc(k):
d +=1
print(d)