This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
// https://oj.uz/problem/view/JOI23_currencies
#include <bits/stdc++.h>
using namespace std;
constexpr int sizik = 200 * 1001, L = 17, INF = 1000 * 1000 * 1001;
#define ar std::array
#define pr std::pair
#define vec std::vector
typedef vec<vec<int>> _kra;
typedef ar<int, 8 * sizik> TreeTD;
std::vector<ar<int, 2>> kra[sizik];
ar<int, 2> kraw_[sizik];
int ans[sizik];
int depth[sizik], pre[sizik], post[sizik], timer = 1;
ar<int, L + 1> up[sizik], IleNaG[sizik];
int jump(int temp_w, int temp_u) {
for (int i = 0; i <= L; i++) {
if (temp_u & (1 << i)) {
temp_w = up[temp_w][i];
}
}
return temp_w;
}
int pow2m1(int a) {
return (1 << a) - 1;
}
vector<int> EulerTourVertices, EulerTourEdges;
int Ile[sizik];
void DFS(int v, int p, int czk) {
// printf("was: %d\n", v);
depth[v] = depth[p] + 1;
pre[v] = ++timer;
up[v][0] = p;
for (int i = 1; i <= L; ++i)
up[v][i] = up[up[v][i - 1]][i - 1];
// std::cout << v << " " << p << " " << czk << '\n';
IleNaG[v][0] = czk;
for (int i = 1; i <= L; ++i) {
IleNaG[v][i] = IleNaG[v][i - 1] + IleNaG[up[v][i - 1]][i - 1];
}
EulerTourVertices.push_back(v);
for (const auto& [u, i] : kra[v]) {
// printf("%d %d\n", v, u);
if (u != p) {
EulerTourEdges.push_back(i);
DFS(u, v, Ile[i]);
EulerTourEdges.push_back(i);
EulerTourVertices.push_back(v);
}
}
post[v] = ++timer;
}
bool is_ancestor(int u, int v) {
return pre[u] <= pre[v] && post[u] >= post[v];
}
int lca(int u, int v) {
if (is_ancestor(u, v)) return u;
if (is_ancestor(v, u)) return v;
for (int i = L; i >= 0; --i) {
if (!is_ancestor(up[u][i], v)) u = up[u][i];
}
return up[u][0];
}
int gn_helper(int v, int l) {
int wyn = 0;
// if (depth[l] > depth[v]) {
// std::swap(l, v);
// }
for (int i = L; i >= 0; --i) {
if (!is_ancestor(up[v][i], l)) {
// std::cout << "hello\n";
// std::cout << "v,i ~> " << v << " " << i << '\n';
wyn += IleNaG[v][i];
v = up[v][i];
}
}
if (v != l) {
// std::cout << "ok " << IleNaG[v][0] << '\n';
wyn += IleNaG[v][0];
}
return wyn;
}
int getNum(int v1, int v2) {
int l = lca(v1, v2);
// std::cout << v1 << " " << v2 << " lca ~> " << l << '\n';
int tmp1 = gn_helper(v1, l);
int tmp2 = gn_helper(v2, l);
// std::cout << "1,2 ~> " << tmp1 << ' ' << tmp2 << '\n';
return tmp1 + tmp2;
}
TreeTD tree1, tree2, tree3, tree4;
ar<int, sizik> first, first1, first2;
void query_prepare(int n) {
// first.assign(n, -1);
for (int i = 0; i <= n; i++) {
first[i] = -1;
first1[i] = -1;
first2[i] = -1;
}
for (int i = 0; i < (int)EulerTourVertices.size(); ++i) {
int v = EulerTourVertices[i];
if (first[v] == -1) first[v] = i + 1;
}
for (int i = 0; i < (int)EulerTourEdges.size(); ++i) {
int j = EulerTourEdges[i];
if (first1[j] == -1)
first1[j] = i + 1;
else
first2[j] = i + 1;
}
}
int ll = 1;
void wypisz(int ll, const TreeTD& d) {
int lvl = 2;
int przerwa = ll - 1;
for (int i = 1; i < 2 * ll; i++) {
if (i == lvl) {
lvl *= 2;
std::cout << '\n';
przerwa /= 2;
}
for (int j = 1; j <= przerwa; j++)
std::cout << ' ';
std::cout << d[i];
for (int j = 1; j <= przerwa; j++)
std::cout << ' ';
std::cout << " ";
}
std::cout << '\n';
}
void sum_tree_update(TreeTD& d, int v, int a) {
v += ll - 1;
d[v] = a;
while (v > 1) {
v /= 2;
d[v] = d[2 * v] + d[2 * v + 1];
}
}
int sum_tree_query(const TreeTD& d, int o, int x, int y, int A, int B) {
if (A <= x && y <= B) {
return d[o];
} else if (B < x || y < A) {
return 0;
} else {
return sum_tree_query(d, o * 2, x, (x + y) / 2, A, B) + sum_tree_query(d, o * 2 + 1, (x + y) / 2 + 1, y, A, B);
}
}
int query(int v1, int v2) {
// std::cout << EulerTourEdges.size() << '\n';
int t1 = sum_tree_query(tree1, 1, 1, ll, first[v1], first[v2] - 1), t2 = sum_tree_query(tree2, 1, 1, ll, first[v1], first[v2] - 1);
// std::cout << "firsty : " << first[v1] << " " << first[v2] << '\n';
// std::cout << "t1: " << t1 << " " << t2 << "\n";
// std::cout << "Nasze drzewka\n1\n";
// wypisz(ll, tree1);
// std::cout << "2\n";
// wypisz(ll, tree2);
return t1 - t2;
}
int query1(int v1, int v2) {
// std::cout << EulerTourEdges.size() << '\n';
return sum_tree_query(tree3, 1, 1, ll, first[v1], first[v2] - 1) - sum_tree_query(tree4, 1, 1, ll, first[v1], first[v2] - 1);
}
int Lazy_query(int v1, int v2) {
int l = lca(v1, v2);
// std::cout << "lazy_q (lca) ~> " << l << '\n';
// std::cout << v1 << " " << v2 << " | lca: " << l << "\n";
// std::cout << first[v1] << " " << first[v2] << " | lca: " << first[l] << "\n";
int tmp1 = query(l, v1);
// std::cout << "af q1\n";
int tmp2 = query(l, v2);
// std::cout << "YAY\n";
// std::cout << tmp1 << " " << tmp2 << '\n';
return tmp1 + tmp2;
}
int Lazy_query1(int v1, int v2) {
int l = lca(v1, v2);
// std::cout << "lazy_q (lca) ~> " << l << '\n';
int tmp1 = query1(l, v1);
// std::cout << "af q1\n";
int tmp2 = query1(l, v2);
// std::cout << "YAY\n";
// std::cout << "tmp ~> " << tmp1 << " " << tmp2 << '\n';
return tmp1 + tmp2;
}
void update(int x, int a) {
sum_tree_update(tree1, first1[x], a);
sum_tree_update(tree2, first2[x], a);
}
void update1(int x, int a) {
sum_tree_update(tree3, first1[x], a);
sum_tree_update(tree4, first2[x], a);
}
vec<int> mids[sizik];
ar<int, 2> pk[sizik];
int midFunc(int gp, int gk) {
return (gp + gk + 1) / 2;
}
void success(int& gp, int& gk, const int gm) {
gp = gm;
}
void failure(int& gp, int& gk, const int gm) {
gk = gm - 1;
}
void autoCheck(bool c, int& gp, int& gk, const int gm) {
if (c) {
success(gp, gk, gm);
} else {
failure(gp, gk, gm);
}
}
void clear() {
for (int i = 0; i < (int)tree1.size(); i++) {
tree1[i] = 0;
tree2[i] = 0;
tree3[i] = 0;
tree4[i] = 0;
}
}
void solve() {
int n, m, q;
std::cin >> n >> m >> q;
while (ll <= n) {
ll *= 2;
}
for (int i = 1; i <= n - 1; i++) {
auto& [a, b] = kraw_[i];
std::cin >> a >> b;
kra[a].push_back({b, i});
kra[b].push_back({a, i});
}
std::vector<ar<int, 2>> CP(m);
for (auto& [C, P] : CP) {
std::cin >> P >> C;
Ile[P]++;
// kraw[P] ~> C srebrników
}
DFS(1, 1, 0);
query_prepare(n);
// std::cout << "EulerTourEdges: ";
// for (int i = 0; i < (int)EulerTourEdges.size(); i++) {
// std::cout << EulerTourEdges[i] << ' ';
// }
// std::cout << '\n';
// std::cout << "EulerTourVertices: ";
// for (int i = 0; i < (int)EulerTourVertices.size(); i++) {
// std::cout << EulerTourVertices[i] << ' ';
// }
// std::cout << '\n';
// std::cout << "first: ";
// for (int i = 1; i <= n; i++) {
// std::cout << first[i] << ' ';
// }
// std::cout << '\n';
// std::cout << "first1: ";
// for (int i = 1; i <= n; i++) {
// std::cout << first1[i] << ' ';
// }
// std::cout << '\n';
// std::cout << "first2: ";
// for (int i = 1; i <= n; i++) {
// std::cout << first2[i] << ' ';
// }
// std::cout << '\n';
// for (int i = 1; i <= n; i++) {
// std::cout << i << " ~> ";
// for (int j = 0; j <= L; j++) {
// std::cout << IleNaG[i][j] << " ";
// }
// std::cout << '\n';
// }
std::sort(CP.begin(), CP.end());
std::vector<ar<int, 3>> mieszkancy(q + 1);
for (int i = 1; i <= q; ++i) {
auto& [s, t, y] = mieszkancy[i];
std::cin >> s >> t >> ans[i] >> y;
int x = getNum(s, t);
// ans[i] += x;
ans[i] -= x;
// std::cout << "i ~> " << i << " x: " << x << " | ans pered ~> " << ans[i] << '\n';
}
int gp = 0, gk = m;
const int gm = midFunc(gp, gk);
for (int i = 1; i <= q; i++) {
// mids[i] = midFunc(gp, gk);
mids[gm].push_back(i);
pk[i] = {gp, gk};
}
int zostalo = q;
while (zostalo) {
// std::cout << zostalo << '\n';
for (int i = 0; i <= m; i++) {
if (i != 0) {
// dodaj tam, co trzeba i-te
// std::cout << "up bef\n";
update(CP[i - 1][1], CP[i - 1][0]);
update1(CP[i - 1][1], 1);
// std::cout << "up af\n";
// std::cout << "1\n";
// wypisz(ll, tree1);
// std::cout << "2\n";
// wypisz(ll, tree2);
// std::cout << "3\n";
// wypisz(ll, tree3);
// std::cout << "4\n";
// wypisz(ll, tree4);
}
for (const auto& u : mids[i]) {
auto& [p, k] = pk[u];
// std::cout << "bef lazy query\n";
const int local_sum = Lazy_query(mieszkancy[u][0], mieszkancy[u][1]);
if (p >= k) {
// ziomek nie ma wyjscia (usuwan);
// ans[u] -= p;
int value = Lazy_query1(mieszkancy[u][0], mieszkancy[u][1]);
// std::cout << "value: " << value << '\n';
ans[u] += value;
// std::cout << "h: " << u << " " << p << " | v: " << value << " || nasze koszta(nasz ziomek, wtóry ziomek: )" <<
// mieszkancy[u][2]
// << " " << local_sum << '\n';
zostalo--;
continue;
}
// std::cout << "mid = " << i << " " << u << '\n';
// std::cout << "wtf: " << mieszkancy[u][2] << ' ' << local_sum << "\n";
if (mieszkancy[u][2] >= local_sum) {
success(p, k, i);
} else {
failure(p, k, i);
}
// std::cout << "klasik ~> " << p << " " << k << " " << u << '\n';
if (p >= k) {
mids[p].push_back(u);
} else {
mids[midFunc(p, k)].push_back(u);
}
}
mids[i].clear();
mids[i].shrink_to_fit();
}
clear();
}
for (int i = 1; i <= q; i++) {
// std::cout << "real ans ~> " << ans[i] << " || ";
std::cout << std::max(-1, ans[i]) << '\n';
}
}
int32_t main() {
#ifndef DONOTX
std::ios_base::sync_with_stdio(0);
std::cin.tie(0);
std::cout.tie(0);
#endif
int t = 1;
// std::cin >> t;
for (; t > 0; t--) {
solve();
}
return 0;
}
/*
for (const auto& u : mids[0]) {
// jakiś gościu ma mida w zerze ;)
// oczywiscie moze (Q = 0)
auto& [p, k] = pk[u];
success(p, k, 0);
if (p >= k) {
// ziomek nie ma wyjscia (usuwan);
ans[u] -= p;
zostalo--;
} else {
mids[midFunc(p, k)].push_back(u);
}
}
*/
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |