def fun_sub(s, r):
    if r < 1200:
        return False
    if "x" in s[:4]:
        return True
    return False


def fun_main(n):
    res = 0
    for _ in range(n):
        a = input().split()
        if fun_sub(a[0], int(a[1])):
            res += 1
    return res


n, m = map(int, input().split())
print(fun_main(n))