n = int(input())
total = 0
l = []
for i in range(1, n+1):
  if (i % 7 != 0 and i % 10 != 7 and i / 10 != 7):
    l.append(i)
# print(l)
for i in range(len(l)):
  total += l[i] * l[i]
print("%d"%total)