def part_1(data):
    ranges = []
    for line in data.splitlines():
        l, h = list(map(int, line.split("-")))
        ranges.append((l, h))

    ranges.sort()
    merged = list(ranges[0])
    for i in range(1, len(ranges)):
        current = ranges[i]
        if current[0] <= merged[1] + 1:
            merged[1] = max(current[1], merged[1])
        else:
            print(merged[1] + 1)
            return


def part_2(data):
    ranges = []
    for line in data.splitlines():
        l, h = list(map(int, line.strip().split("-")))
        ranges.append((l, h))

    ranges.sort()
    blocked_merged = [list(ranges[0])]
    for block in ranges:
        merged = blocked_merged[-1]
        if block[0] <= merged[1] + 1:
            merged[1] = max(block[1], merged[1])
        else:
            blocked_merged.append(list(block))

    total = 2**32
    for lo, hi in blocked_merged:
        total -= (hi - lo + 1)
    print(total)


def main():
    data = open(0).read().strip()
    part_1(data)
    part_2(data)


if __name__ == "__main__":
    main()