#include <iostream>
#include <queue>
using namespace std;
const int maxn = 1e4 + 5;

int n, x, X;
int can[maxn][3], w[maxn], ans[maxn];
bool used[maxn];
queue<int> q;

void bfs(int x) {
	memset(used, 0, sizeof(used));
	q.push(x);
	ans[x] += w[x];
	while (!q.empty()) {
		int p = q.front();
		q.pop();
		int uu = can[p][1];
		if (!used[uu]) {
			used[uu] = true;
			ans[uu] += w[x];
			q.push(uu);
		}
		int vv = can[p][2];
		if (!used[vv]) {
			used[vv] = true;
			ans[vv] += w[x];
			q.push(vv);
		}
	}
}

void solve() {

	cin >> n >> X;
	can[1][1] = 0;
	can[1][2] = 0;
	for (int i = 1; i <= n; ++i) {
		cin >> x >> can[x][1] >> can[x][2] >> w[x];
	}
	for (int i = 2; i <= n + 1; ++i) {
		bfs(i);
	}
	int num = 0;
	for (int i = 2; i <= n; ++i) {
		if (ans[i] >= X) {
			cout << i << " " << ans[i] << "\n";
			num ++;
		}
	}
	cout << num;
}

int main() {

	ios::sync_with_stdio(0);
	cin.tie(0);
	solve();

	return 0;
}

answer.code: In function ‘void bfs(int)’:
answer.code:12:9: error: ‘memset’ was not declared in this scope
   12 |         memset(used, 0, sizeof(used));
      |         ^~~~~~
answer.code:3:1: note: ‘memset’ is defined in header ‘<cstring>’; did you forget to ‘#include <cstring>’?
    2 | #include <queue>
  +++ |+#include <cstring>
    3 | using namespace std;