file = open('9.txt')
count = 0
for s in file:
    A = list(map(int, s.split()))
    A.sort()
    d = {elem: 0 for elem in A}
    for elem in A:
        d[elem] += 1
    A_rep = []
    A_unrep = []
    for elem in d:
        if d[elem] > 1:
            A_rep += [elem]
        else:
            A_unrep += [elem]
    if len(A_rep) == 0 and 3 * (A[0] + A[4]) <= 2 * (A[1] + A[2] + A[3]):
        count += 1
print(count)