import sys


def main() -> int:
    n_valid = 0
    total = 0

    for pol_pas in [PolicyPassword.fromstring(s) for s in sys.stdin.readlines(False)]:
        if pol_pas.is_valid():
            n_valid += 1
        total += 1

    print(f"{n_valid}/{total} valid")

    return 0


class Policy:
    def __init__(self, char: str, pos1: int, pos2: int):
        self.char = char
        self.pos1 = pos1
        self.pos2 = pos2

    @classmethod
    def fromstring(cls, input_string) -> "Policy":
        parts = [s.strip() for s in input_string.split(" ")][:2]
        pos = [int(s) for s in parts[0].split("-")][:2]
        return cls(parts[1], pos[0], pos[1])

    def is_valid(self, password: str) -> bool:
        matches = 0
        for pos in (self.pos1 - 1, self.pos2 - 1):
            if password[pos] == self.char:
                matches += 1
        return matches == 1


class PolicyPassword:
    def __init__(self, policy: "Policy", password: str):
        self.policy = policy
        self.password = password

    @classmethod
    def fromstring(cls, input_string: str) -> "PolicyPassword":
        parts = [s.strip() for s in input_string.split(":")][:2]
        return cls(Policy.fromstring(parts[0]), parts[1])

    def is_valid(self) -> bool:
        return self.policy.is_valid(self.password)


if __name__ == "__main__":
    sys.exit(main())