import sys
from pprint import pprint
from functools import reduce
from operator import and_ 

with open(sys.argv[1],"r") as f:
    line = [line.rstrip('\n').split(',') for line in f]

lines=[]

def contains(superset, subset) -> bool:
    # creates a list of boolean values and
    # combines them using the and operator
    return reduce(and_, [i in superset for i in subset])

for i in line:
    lines.append([i[0].split('-'),i[1].split('-')])
 
for i in range(0, len(lines)):
    temp = []
    if int(lines[i][0][0]) == int(lines[i][0][1]):
        temp = [int(lines[i][0][0])]
    else:
        for j in range(int(lines[i][0][0]),int(lines[i][0][1])+1):
            temp.append(j)
    
    lines[i].append(temp)
    temp = []
    
    if int(lines[i][1][0]) == int(lines[i][1][1]):
        temp = [int(lines[i][1][0])]
    else:
        for j in range(int(lines[i][1][0]),int(lines[i][1][1])+1):
            temp.append(j)

    lines[i].append(temp)
    temp = [] 

    superset = lines[i][2]
    subset = lines[i][3]

    if contains(superset,subset):
        lines[i].append(True)
    elif contains(subset,superset):
        lines[i].append(True)
    else:
        lines[i].append(False)

count=0
for i in range(0,len(lines)):
    if lines[i][4]:
        count+=1     
print(count)