#include using namespace std; const int LOG = 13; const long long INF = 1000000000000000000; int main(){ int N, K; cin >> N >> K; vector R(N); vector X(N); for (int i = 0; i < N; i++){ cin >> R[i] >> X[i]; } vector>> E(N + 1); for (int i = 0; i < N; i++){ E[i].push_back(make_pair(X[i], R[i])); E[R[i]].push_back(make_pair(-X[i], i)); } vector d(N + 1, 0); vector s(N + 1, 0); for (int i = N - 1; i >= 0; i--){ d[i] = d[R[i]] + 1; s[i] = s[R[i]] + X[i]; } vector> pp(LOG, vector(N + 1, -1)); vector> sum(LOG, vector(N + 1, 0)); for (int i = 0; i < N; i++){ pp[0][i] = R[i]; sum[0][i] = X[i]; } for (int i = 0; i < LOG - 1; i++){ for (int j = 0; j <= N; j++){ if (pp[i][j] != -1){ pp[i + 1][j] = pp[i][pp[i][j]]; sum[i + 1][j] = sum[i][j] + sum[i][pp[i][j]]; } } } auto lca = [&](int u, int v){ if (d[u] > d[v]){ swap(u, v); } for (int i = LOG - 1; i >= 0; i--){ if (((d[v] - d[u]) >> i & 1) == 1){ v = pp[i][v]; } } if (u == v){ return u; } for (int i = LOG - 1; i >= 0; i--){ if (pp[i][u] != pp[i][v]){ u = pp[i][u]; v = pp[i][v]; } } return R[u]; }; auto dist = [&](int u, int v){ return s[u] - s[v]; }; vector ok(N, true); vector mn(N, -INF), mx(N, INF); for (int i = 0; i < N; i++){ int w = lca(i, i + 1); if (dist(i, i + 1) < 0 || dist(i, i + 1) > K){ vector is_on_path(N, false); int u = i, v = i + 1; while (u != v){ if (d[u] > d[v]){ is_on_path[u] = true; u = R[u]; } else { is_on_path[v] = true; v = R[v]; } } for (int j = 0; j < N; j++){ if (!is_on_path[j]){ ok[j] = false; } } } else { int u = i, v = i + 1; while (u != v){ if (d[u] > d[v]){ mn[u] = max(mn[u], -s[i] + s[i + 1] + X[u]); mx[u] = min(mx[u], -s[i] + s[i + 1] + X[u] + K); u = R[u]; } else { mn[v] = max(mn[v], s[i] - s[i + 1] + X[v] - K); mx[v] = min(mx[v], s[i] - s[i + 1] + X[v]); v = R[v]; } } } } for (int i = 0; i < N; i++){ if (mn[i] > mx[i]){ ok[i] = false; } } for (int i = 0; i < N; i++){ if (ok[i]){ cout << "Yes" << endl; } else { cout << "No" << endl; } } }