def C(x, y):
    if x * 2 > y:
        return C(y - x, y)
    out = 1
    for i in xrange(y, y - x, -1):
        out *= i
    for i in xrange(1, x + 1):
        out /= i
    return out

total = []
for i in xrange(1, 101):
    j = 0
    tmp = 0
    for j in xrange(i + 1):
        tmp = C(j, i)
        if tmp < 1000000:
            total.append((j, i, tmp))
        else:
            break
    if 2 * j < i:
        for j in xrange(j - 1, -1, -1):
            total.append((i - j, i))


print 103 * 50 - len(total)