cl, cr = [0 for i in range(28)], [0 for i in range(28)]
for i in range(1000):
	cs = sum(int(d) - int('0') for d in str(i))
	if i >= 100: cl[cs] += 1
	cr[cs] += 1
print(sum(cl[i] * cr[i] for i in range(28)))