#include using namespace std; template class y_combinator { F f; public: y_combinator(F&& f) : f(std::forward(f)) {} template auto operator()(Args&&... args) const { return f(*this, std::forward(args)...); } }; using ll = long long; using ld = long double; template > using prique = std::priority_queue, U>; template T floor(T a, T b) noexcept { return a / b - (a % b && (a ^ b) < 0); } template T ceil(T a, T b) noexcept { return floor(a + b - 1, b); } template bool chmin(T& x, const T& y) noexcept { return (x > y ? x = y, true : false); } template bool chmax(T& x, const T& y) noexcept { return (x < y ? x = y, true : false); } #define overload4(a, b, c, d, e, ...) e #define rep1(a) for (long long _i = 0; _i < (a); _i++) #define rep2(i, a) for (long long i = 0; i < (a); i++) #define rep3(i, a, b) for (long long i = (a); i < (b); i++) #define rep4(i, a, b, c) for (long long i = (a); i < (b); i += (c)) #define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__) #define rrep(i, a, b, c) for (long long i = (a); i > (b); i += (c)) #define all(x) std::begin(x), std::end(x) #define rall(x) std::rbegin(x), std::rend(x) #define pb push_back #ifndef LOCAL #define debug(...) #endif #include void run_case() { int N, M; cin >> N >> M; vector K(N), C(N); vector> A(N), B(N), idx(N); int sum = 0; int id = 0; rep(i, N) { cin >> K[i] >> C[i]; sum += K[i]; A[i].resize(K[i]); B[i].resize(K[i]); idx[i].resize(K[i]); rep(j, K[i]) cin >> A[i][j], A[i][j]--; rep(j, K[i]) cin >> B[i][j]; rep(j, K[i]) idx[i][j] = id + j; id += K[i]; } const int SRC = N; const int SNK = N + 1; const ll INF = 1e18; atcoder::mf_graph G(N + 2 + sum); ll tot = 0; rep(i, N) { tot += M; G.add_edge(SRC, i, M); } const int OFFSET = N + 2; rep(i, N) { rep(j, K[i]) { G.add_edge(idx[i][j] + OFFSET, A[i][j], INF); G.add_edge(idx[i][j] + OFFSET, i, INF); tot += B[i][j]; G.add_edge(SRC, idx[i][j] + OFFSET, B[i][j]); } } rep(i, N) { G.add_edge(i, SNK, C[i]); } ll ans = tot - G.flow(SRC, SNK); cout << ans << "\n"; } int main() { std::ios_base::sync_with_stdio(false); std::cin.tie(nullptr); std::fixed(std::cout).precision(16); int T = 1; while (T--) run_case(); return 0; }