tr10.n9

k = 0
with open('N9.txt') as f:
    lines = f.readlines()
    for line in lines:
        a = [int(i) for i in line.split()]
        if len(a) - len(set(a)) < 1:
            continue
        S = 0
        for i in a:
            if a.count(i) == 1:
                S += i
        if S % 2 == 1:
            k += 1
            #print(a)
print(k)