import fileinput
rang = True
ranges = []
s = 0
with fileinput.input() as lines:
for line in lines:
if line == '\n':
rang = False
elif rang:
i = line.find('-')
ranges.append((int(line[:i]), int(line[i+1:-1])))
else:
x = int(line[:-1])
if any(x >= r[0] and x <= r[1] for r in ranges):
s += 1
print(s)