結果
| 問題 | No.2439 Fragile Apple Tree |
| ユーザー |
 ebi_fly
|
| 提出日時 | 2023-08-18 18:58:46 |
| 言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 11,075 bytes |
| コンパイル時間 | 9,138 ms |
| コンパイル使用メモリ | 302,092 KB |
| 実行使用メモリ | 177,396 KB |
| 最終ジャッジ日時 | 2024-05-06 00:42:20 |
| 合計ジャッジ時間 | 44,537 ms |
|
ジャッジサーバーID （参考情報） |
judge2 / judge3 |
（要ログイン）
テストケース
テストケース表示| 入力 | 結果 | 実行時間 実行使用メモリ |
|---|---|---|
| testcase_00 | WA | - |
| testcase_01 | WA | - |
| testcase_02 | WA | - |
| testcase_03 | WA | - |
| testcase_04 | WA | - |
| testcase_05 | WA | - |
| testcase_06 | WA | - |
| testcase_07 | WA | - |
| testcase_08 | WA | - |
| testcase_09 | WA | - |
| testcase_10 | WA | - |
| testcase_11 | WA | - |
| testcase_12 | WA | - |
| testcase_13 | WA | - |
| testcase_14 | WA | - |
| testcase_15 | WA | - |
| testcase_16 | WA | - |
| testcase_17 | WA | - |
| testcase_18 | WA | - |
| testcase_19 | WA | - |
| testcase_20 | WA | - |
| testcase_21 | WA | - |
| testcase_22 | WA | - |
| testcase_23 | WA | - |
| testcase_24 | WA | - |
| testcase_25 | WA | - |
| testcase_26 | WA | - |
| testcase_27 | WA | - |
| testcase_28 | WA | - |
| testcase_29 | WA | - |
| testcase_30 | WA | - |
| testcase_31 | WA | - |
| testcase_32 | WA | - |
ソースコード
#include <algorithm>
#include <bitset>
#include <cassert>
#include <chrono>
#include <climits>
#include <cmath>
#include <complex>
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <functional>
#include <iomanip>
#include <iostream>
#include <limits>
#include <map>
#include <memory>
#include <numeric>
#include <optional>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#define rep(i, a, n) for (int i = (int)(a); i < (int)(n); i++)
#define rrep(i, a, n) for (int i = ((int)(n)-1); i >= (int)(a); i--)
#define Rep(i, a, n) for (i64 i = (i64)(a); i < (i64)(n); i++)
#define RRep(i, a, n) for (i64 i = ((i64)(n)-i64(1)); i >= (i64)(a); i--)
#define all(v) (v).begin(), (v).end()
#define rall(v) (v).rbegin(), (v).rend()
namespace ebi {
using std::size_t;
using i8 = std::int8_t;
using u8 = std::uint8_t;
using i16 = std::int16_t;
using u16 = std::uint16_t;
using i32 = std::int32_t;
using u32 = std::uint32_t;
using i64 = std::int64_t;
using u64 = std::uint64_t;
using i128 = __int128_t;
using u128 = __uint128_t;
}
namespace ebi {
template <typename T1, typename T2>
std::ostream &operator<<(std::ostream &os, const std::pair<T1, T2> &pa) {
return os << pa.first << " " << pa.second;
}
template <typename T1, typename T2>
std::istream &operator>>(std::istream &os, std::pair<T1, T2> &pa) {
return os >> pa.first >> pa.second;
}
template <typename T>
std::ostream &operator<<(std::ostream &os, const std::vector<T> &vec) {
for (std::size_t i = 0; i < vec.size(); i++)
os << vec[i] << (i + 1 == vec.size() ? "" : " ");
return os;
}
template <typename T>
std::istream &operator>>(std::istream &os, std::vector<T> &vec) {
for (T &e : vec) std::cin >> e;
return os;
}
template <typename T>
std::ostream &operator<<(std::ostream &os, const std::optional<T> &opt) {
if (opt) {
os << opt.value();
} else {
os << "invalid value";
}
return os;
}
void fast_io() {
std::cout << std::fixed << std::setprecision(15);
std::cin.tie(nullptr);
std::ios::sync_with_stdio(false);
}
} // namespace ebi
namespace ebi {
template <class T> inline bool chmin(T &a, T b) {
if (a > b) {
a = b;
return true;
}
return false;
}
template <class T> inline bool chmax(T &a, T b) {
if (a < b) {
a = b;
return true;
}
return false;
}
constexpr i64 LNF = std::numeric_limits<i64>::max() / 4;
constexpr int INF = std::numeric_limits<int>::max() / 2;
const std::vector<int> dy = {1, 0, -1, 0, 1, 1, -1, -1};
const std::vector<int> dx = {0, 1, 0, -1, 1, -1, 1, -1};
} // namespace ebi
namespace ebi {
template <class T> struct Edge {
int to;
T cost;
Edge(int _to, T _cost = 1) : to(_to), cost(_cost) {}
};
template <class T> struct Graph : std::vector<std::vector<Edge<T>>> {
using std::vector<std::vector<Edge<T>>>::vector;
void add_edge(int u, int v, T w, bool directed = false) {
(*this)[u].emplace_back(v, w);
if (directed) return;
(*this)[v].emplace_back(u, w);
}
};
struct graph : std::vector<std::vector<int>> {
using std::vector<std::vector<int>>::vector;
void add_edge(int u, int v, bool directed = false) {
(*this)[u].emplace_back(v);
if (directed) return;
(*this)[v].emplace_back(u);
}
};
} // namespace ebi
namespace ebi {
struct heavy_light_decomposition {
private:
void dfs_sz(int v) {
for (auto &nv : g[v]) {
if (nv == par[v]) continue;
par[nv] = v;
depth[nv] = depth[v] + 1;
dfs_sz(nv);
sz[v] += sz[nv];
if (sz[nv] > sz[g[v][0]] || g[v][0] == par[v])
std::swap(nv, g[v][0]);
}
}
void dfs_hld(int v) {
static int t = 0;
in[v] = t++;
rev[in[v]] = v;
for (auto nv : g[v]) {
if (nv == par[v]) continue;
nxt[nv] = (nv == g[v][0] ? nxt[v] : nv);
dfs_hld(nv);
}
out[v] = t;
}
// [u, v) パスの取得 (v は u の祖先)
std::vector<std::pair<int, int>> ascend(int u, int v) const {
std::vector<std::pair<int, int>> res;
while (nxt[u] != nxt[v]) {
res.emplace_back(in[u], in[nxt[u]]);
u = par[nxt[u]];
}
if (u != v) res.emplace_back(in[u], in[v] + 1);
return res;
}
// (u, v] パスの取得 (u は v の祖先)
std::vector<std::pair<int, int>> descend(int u, int v) const {
if (u == v) return {};
if (nxt[u] == nxt[v]) return {{in[u] + 1, in[v]}};
auto res = descend(u, par[nxt[v]]);
res.emplace_back(in[nxt[v]], in[v]);
return res;
}
public:
heavy_light_decomposition(const std::vector<std::vector<int>> &gh,
int root = 0)
: n(gh.size()),
g(gh),
sz(n, 1),
in(n),
out(n),
nxt(n),
par(n, -1),
depth(n, 0),
rev(n) {
dfs_sz(root);
dfs_hld(root);
}
int idx(int u) const {
return in[u];
}
int la(int v, int k) const {
while (1) {
int u = nxt[v];
if (in[u] <= in[v] - k) return rev[in[v] - k];
k -= in[v] - in[u] + 1;
v = par[u];
}
}
int lca(int u, int v) const {
while (nxt[u] != nxt[v]) {
if (in[u] < in[v]) std::swap(u, v);
u = par[nxt[u]];
}
return depth[u] < depth[v] ? u : v;
}
int jump(int s, int t, int i) const {
if (i == 0) return s;
int l = lca(s, t);
int d = depth[s] + depth[t] - depth[l] * 2;
if (d < i) return -1;
if (depth[s] - depth[l] >= i) return la(s, i);
i = d - i;
return la(t, i);
}
std::vector<int> path(int s, int t) const {
int l = lca(s, t);
std::vector<int> a, b;
for (; s != l; s = par[s]) a.emplace_back(s);
for (; t != l; t = par[t]) b.emplace_back(t);
a.emplace_back(l);
std::reverse(b.begin(), b.end());
a.insert(a.end(), b.begin(), b.end());
return a;
}
int distance(int u, int v) const {
return depth[u] + depth[v] - 2 * depth[lca(u, v)];
}
int distance_from_root(int v) const {
return depth[v];
}
bool at_path(int u, int v, int s) const {
return distance(u, v) == distance(u, s) + distance(s, v);
}
template <class F>
void path_noncommutative_query(int u, int v, bool vertex,
const F &f) const {
int l = lca(u, v);
for (auto [a, b] : ascend(u, l)) f(a + 1, b);
if (vertex) f(in[l], in[l] + 1);
for (auto [a, b] : descend(l, v)) f(a, b + 1);
}
template <class F> void subtree_query(int u, bool vertex, const F &f) {
f(in[u] + int(!vertex), out[u]);
}
private:
int n;
std::vector<std::vector<int>> g;
std::vector<int> sz, in, out, nxt, par, depth, rev;
};
} // namespace ebi
#include <atcoder/lazysegtree>
#include <atcoder/dsu>
#include "testlib.h"
namespace ebi {
i64 op(i64 a, i64 b) {
return a < b ? a : b;
}
i64 e() {
return LNF;
}
i64 mapping(i64 f, i64 x) {
return f + x;
}
i64 composition(i64 f, i64 g) {
return f + g;
}
i64 id() {
return 0;
}
using ll = long long;
const ll n_min = 2, n_max = 300000;
const ll q_min = 1, q_max = 300000;
const ll c_min = 1, c_max = 1'000'000'000'000'000;
const ll x_min = 1, x_max = 1'000'000'000;
void main_() {
registerValidation();
int n = inf.readLong(n_min, n_max);
inf.readSpace();
int q = inf.readLong(q_min, q_max);
inf.readEoln();
std::vector<i64> d(n, LNF);
Graph<i64> g(n);
graph gh(n);
atcoder::dsu uf(n);
rep(i, 0, n - 1) {
int a, b;
i64 c;
a = inf.readLong(1ll, n) - 1;
inf.readSpace();
b = inf.readLong(1ll, n) - 1;
inf.readSpace();
c = inf.readLong(c_min, c_max);
inf.readEoln();
g.add_edge(a, b, c);
gh.add_edge(a, b);
ensure(!uf.same(a, b));
uf.merge(a, b);
}
ensure(uf.size(0) == n);
std::vector<int> par(n, -1);
auto dfs_par = [&](auto &&self, int v) -> void {
for (auto [nv, w] : g[v]) {
if (nv == par[v]) continue;
par[nv] = v;
d[nv] = w;
self(self, nv);
}
};
dfs_par(dfs_par, 0);
int ans = n;
std::vector<int> mark(n, -1);
std::vector<i64> apple(n, 0);
auto dfs_break = [&](auto &&self, int v) -> i64 {
assert(mark[v] < 0);
mark[v] = 1;
ans--;
i64 ret = apple[v];
for (auto nv : gh[v]) {
if (nv == par[v] || mark[nv] > 0) continue;
ret += self(self, nv);
}
return ret;
};
heavy_light_decomposition hld(gh);
atcoder::lazy_segtree<i64, op, e, i64, mapping, composition, id> seg(n);
rep(i, 0, n) {
seg.set(hld.idx(i), d[i]);
}
i64 res = e();
i64 add_val = 0;
auto path_add_f = [&](int l, int r) -> void {
if (l <= r)
seg.apply(l, r, add_val);
else
seg.apply(r, l, add_val);
};
auto path_min_f = [&](int l, int r) -> void {
if (l <= r)
res = op(res, seg.prod(l, r));
else
res = op(res, seg.prod(r, l));
};
auto path_add = [&](int u, int v, i64 x) -> void {
add_val = x;
hld.path_noncommutative_query(u, v, false, path_add_f);
};
auto path_min = [&](int u, int v) -> i64 {
res = e();
hld.path_noncommutative_query(u, v, false, path_min_f);
return res;
};
int type2 = 0;
while (q--) {
int t = inf.readLong(1ll, 2ll);
int v = -1;
i64 x = -1;
if(t == 1) {
inf.readSpace();
v = inf.readLong(1ll, n) - 1;
inf.readSpace();
x = inf.readLong(x_min, x_max);
}
inf.readEoln();
if (t == 1) {
ensure(mark[v] < 0);
apple[v] += x;
path_add(0, v, -x);
if (path_min(0, v) > 0) continue;
int ng = 0, ok = hld.distance_from_root(v);
while (std::abs(ok - ng) > 1) {
int mid = (ok + ng) / 2;
if (path_min(v, hld.la(v, mid)) > 0) {
ng = mid;
} else {
ok = mid;
}
}
int broken_v = hld.la(v, ok - 1);
i64 sum = dfs_break(dfs_break, broken_v);
path_add(broken_v, 0, sum);
}
else type2++;
}
ensure(type2 > 0);
inf.readEof();
}
} // namespace ebi
int main() {
ebi::fast_io();
int t = 1;
// std::cin >> t;
while (t--) {
ebi::main_();
}
return 0;
}