def score(name):
	sum = 0
	for char in name:
		sum += ord(char) - 64
	return sum

triangle_numbers = [ int(0.5*n*(n-1)) for n in range(2, 200) ]
count = 0

f = open('042.txt', 'r')
for word in f:
	word = word.rstrip("\n")
	if score(word) in triangle_numbers:
		count += 1
f.close()

print count