結果
| 問題 |
No.2859 Falling Balls
|
| コンテスト | |
| ユーザー |
shobonvip
|
| 提出日時 | 2024-08-25 16:15:15 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 983 ms / 3,000 ms |
| コード長 | 5,431 bytes |
| コンパイル時間 | 6,484 ms |
| コンパイル使用メモリ | 336,136 KB |
| 実行使用メモリ | 175,872 KB |
| 最終ジャッジ日時 | 2024-08-25 16:15:37 |
| 合計ジャッジ時間 | 21,459 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 30 |
ソースコード
#include<bits/stdc++.h>
using namespace std;
//* ATCODER
#include<atcoder/all>
using namespace atcoder;
typedef modint998244353 mint;
//*/
/* BOOST MULTIPRECISION
#include<boost/multiprecision/cpp_int.hpp>
using namespace boost::multiprecision;
//*/
typedef long long ll;
#define rep(i, s, n) for (int i = (int)(s); i < (int)(n); i++)
#define rrep(i, s, n) for (int i = (int)(n)-1; i >= (int)(s); i--)
template <typename T> bool chmin(T &a, const T &b) {
if (a <= b) return false;
a = b;
return true;
}
template <typename T> bool chmax(T &a, const T &b) {
if (a >= b) return false;
a = b;
return true;
}
template <typename T> T max(vector<T> &a){
assert(!a.empty());
T ret = a[0];
for (int i=0; i<(int)a.size(); i++) chmax(ret, a[i]);
return ret;
}
template <typename T> T min(vector<T> &a){
assert(!a.empty());
T ret = a[0];
for (int i=0; i<(int)a.size(); i++) chmin(ret, a[i]);
return ret;
}
template <typename T> T sum(vector<T> &a){
T ret = 0;
for (int i=0; i<(int)a.size(); i++) ret += a[i];
return ret;
}
//https://hitonanode.github.io/cplib-cpp/segmenttree/rangetree.hpp.html
#include <algorithm>
#include <cassert>
#include <utility>
#include <vector>
// CUT begin
// 逆元を要求しない領域木
template <class S, S (*op)(S, S), S (*e)(), class Coordinate> class rangetree {
int n;
using Pt = std::pair<Coordinate, Coordinate>;
std::vector<Pt> _pts;
std::vector<std::vector<Pt>> _range2yxs;
std::vector<atcoder::segtree<S, op, e>> segtrees;
void _set(int v, Pt p, S val) {
auto i = std::distance(
_range2yxs[v].begin(),
std::lower_bound(_range2yxs[v].begin(), _range2yxs[v].end(), Pt{p.second, p.first}));
segtrees[v].set(i, val);
}
void _add(int v, Pt p, S val) {
auto i = std::distance(
_range2yxs[v].begin(),
std::lower_bound(_range2yxs[v].begin(), _range2yxs[v].end(), Pt{p.second, p.first}));
segtrees[v].set(i, op(segtrees[v].get(i), val));
}
S _prod(int v, Coordinate yl, Coordinate yr) const {
auto comp = [&](const Pt &l, const Pt &r) { return l.first < r.first; };
auto il = std::distance(
_range2yxs[v].begin(),
std::lower_bound(_range2yxs[v].begin(), _range2yxs[v].end(), Pt{yl, yl}, comp));
auto ir = std::distance(
_range2yxs[v].begin(),
std::lower_bound(_range2yxs[v].begin(), _range2yxs[v].end(), Pt{yr, yr}, comp));
return segtrees[v].prod(il, ir);
}
public:
rangetree() = default;
void add_point(Coordinate x, Coordinate y) noexcept { _pts.emplace_back(x, y); }
void build() {
std::sort(_pts.begin(), _pts.end());
_pts.erase(std::unique(_pts.begin(), _pts.end()), _pts.end());
n = _pts.size();
_range2yxs.resize(n * 2);
for (int i = 0; i < n; i++) _range2yxs[n + i] = {{_pts[i].second, _pts[i].first}};
for (int i = n - 1; i > 0; i--) {
auto &lch = _range2yxs[i * 2];
auto &rch = _range2yxs[i * 2 + 1];
std::merge(
lch.begin(), lch.end(), rch.begin(), rch.end(), std::back_inserter(_range2yxs[i]));
_range2yxs[i].erase(
std::unique(_range2yxs[i].begin(), _range2yxs[i].end()), _range2yxs[i].end());
}
for (const auto &v : _range2yxs) segtrees.emplace_back(v.size());
}
void set(Coordinate x, Coordinate y, S val) {
int i = std::distance(_pts.begin(), std::lower_bound(_pts.begin(), _pts.end(), Pt{x, y}));
assert(i < n and _pts[i] == std::make_pair(x, y));
for (i += n; i; i >>= 1) _set(i, {x, y}, val);
}
void add(Coordinate x, Coordinate y, S val) {
int i = std::distance(_pts.begin(), std::lower_bound(_pts.begin(), _pts.end(), Pt{x, y}));
assert(i < n and _pts[i] == std::make_pair(x, y));
for (i += n; i; i >>= 1) _add(i, {x, y}, val);
}
S prod(Coordinate xl, Coordinate xr, Coordinate yl, Coordinate yr) const {
auto comp = [](const Pt &l, const Pt &r) { return l.first < r.first; };
int l = n + std::distance(_pts.begin(),
std::lower_bound(_pts.begin(), _pts.end(), Pt{xl, yr}, comp));
int r = n + std::distance(_pts.begin(),
std::lower_bound(_pts.begin(), _pts.end(), Pt{xr, yr}, comp));
S ret = e();
while (l < r) {
if (l & 1) ret = op(ret, _prod(l++, yl, yr));
if (r & 1) ret = op(ret, _prod(--r, yl, yr));
l >>= 1, r >>= 1;
}
return ret;
}
S get(Coordinate x, Coordinate y) const { return prod(x, x + 1, y, y + 1); }
};
ll op(ll a, ll b){
return max(a, b);
}
ll e(){
return -1e18;
}
int main(){
int n; cin >> n;
ll k; cin >> k;
vector<ll> t(n), x(n), c(n);
vector<tuple<ll,ll,ll>> f(n);
rep(i,0,n) cin >> t[i];
rep(i,0,n) cin >> x[i];
rep(i,0,n) cin >> c[i];
rep(i,0,n) f[i] = make_tuple(t[i], x[i], c[i]);
sort(f.begin(), f.end());
rep(i,0,n){
t[i] = get<0>(f[i]);
x[i] = get<1>(f[i]);
c[i] = get<2>(f[i]);
}
rangetree<ll,op,e,ll> wm;
rep(i,0,n){
wm.add_point(x[i]+k*t[i], x[i]-k*t[i]);
}
wm.add_point(0, 0);
wm.build();
wm.set(0, 0, 0);
rep(i,0,n){
ll X = x[i]+k*t[i];
ll Y = x[i]-k*t[i];
ll Z = wm.prod(-9e18, X+1, Y, 9e18) + c[i];
wm.set(X, Y, Z);
}
cout << wm.prod(-9e18, 9e18, -9e18, 9e18) << '\n';
}
shobonvip