list comprehension
while True:
try:
n = int(input())
seven = [i for i in range(1, n+1) if i % 7 == 0 or '7' in str(i)]
print(len(seven))
except:
break
list comprehension
while True:
try:
n = int(input())
seven = [i for i in range(1, n+1) if i % 7 == 0 or '7' in str(i)]
print(len(seven))
except:
break