結果
| 問題 | No.3407 Birds-of-Paradise' Christmas Live |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2025-12-14 01:03:11 |
| 言語 | C++17 (gcc 15.2.0 + boost 1.89.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 4,308 bytes |
| 記録 | |
| コンパイル時間 | 1,921 ms |
| コンパイル使用メモリ | 207,380 KB |
| 実行使用メモリ | 212,648 KB |
| 最終ジャッジ日時 | 2025-12-14 01:03:22 |
| 合計ジャッジ時間 | 10,524 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 5 WA * 15 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
template<class T> istream& operator >> (istream& is, vector<T>& vec) {
for(T& x : vec) is >> x;
return is;
}
template<class T> ostream& operator << (ostream& os, const vector<T>& vec) {
if(vec.empty()) return os;
os << vec[0];
for(auto it = vec.begin(); ++it != vec.end(); ) os << ' ' << *it;
return os;
}
class LiChaoTree{
struct Line{
long long a, b;
long long get(long long x){return a * x + b; }
Line(long long a, long long b) : a(a), b(b) {}
};
struct Node {
Node *left, *right;
Line line;
Node(Line line) : left(nullptr), right(nullptr), line(line) {}
};
const long long inf = (1ll << 60);
const Line inf_line = Line{0, -inf};
Node *root;
long long lx, rx;
Node* _add_line(Node *nd, Line line, long long l, long long r){
if(l == r) return nullptr;
if(nd == nullptr) return new Node(line);
long long m = (l + r) >> 1;
bool left = (line.get(l) >= nd->line.get(l));
bool mid = (line.get(m) >= nd->line.get(m));
bool right = (line.get(r) >= nd->line.get(r));
if(left && right)nd->line = line;
if(left == right)return nd;
if(mid) std::swap(nd->line, line);
if(left != mid){
nd->left = _add_line(nd->left, line, l, m);
}else{
nd->right = _add_line(nd->right, line, m, r);
}
return nd;
}
Node* _add_segment_line(long long a, long long b, Node *nd, Line line, long long l, long long r) {
if(r <= a || b <= l) return nd;
if(a <= l && r <= b) return _add_line(nd, line, l, r);
if(nd == nullptr) nd = new Node(inf_line);
long long m = (l + r) >> 1;
nd->left = _add_segment_line(a, b, nd->left, line, l, m);
nd->right = _add_segment_line(a, b, nd->right, line, m, r);
return nd;
}
long long query(long long x, long long l, long long r){
Node *nd = root;
long long res = -inf;
while(r > l && nd != nullptr) {
long long m = (l + r) >> 1;
res = std::max(res, nd->line.get(x));
if(x < m) {
r = m;
nd = nd->left;
} else {
l = m;
nd = nd->right;
}
}
return res;
}
public:
LiChaoTree(long long lx, long long rx) : lx(lx), rx(rx), root(nullptr) {}
void add_line(long long a, long long b) {
Line line(a, b);
root = _add_line(root, line, lx, rx);
}
void add_segment_line(long long a, long long b, long long l, long long r) {
Line line = Line{a, b};
root = _add_segment_line(l, r, root, line, lx, rx);
}
long long get(long long x) {
return query(x, lx, rx);
}
};
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
int n, m;
cin >> n;
vector<int> w(n);
cin >> w >> m;
vector<int> s(m);
cin >> s;
vector<int> ca;
ca.reserve(n + m);
w.insert(w.begin(), 0);
for(int i = 0; i < n; i++)w[i + 1] += w[i];
ca.insert(ca.end(), w.begin(), w.end());
s.insert(s.begin(), 0);
for(int i = 0; i < m; i++) s[i + 1] += s[i];
ca.insert(ca.end(), s.begin(), s.end());
sort(ca.begin(), ca.end());
ca.erase(unique(ca.begin(), ca.end()), ca.end());
LiChaoTree LCT(0, ca.back() + 1);
auto f = [&](ll v){
return v * v + LCT.get(v);
};
int S = 0, pS = 0;
ll mx = 0;
for(int i = 0, si = 0, wi = 0; i < ca.size(); i++){
while(wi <= n && w[wi] == ca[i]){
wi++;
S ^= 1;
}
while(si <= m && s[si] == ca[i]){
si++;
S ^= 2;
}
mx = max(mx, f(ca[i]));
if((S & 1) && ((S ^ pS) & 1)){
int wj = wi;
while(wj + 1 <= n && w[wj + 1] == w[wj]) wj++;
LCT.add_segment_line(-2 * ca[i], (ll)(ca[i]) * ca[i] + mx, 0, w[wj] + 1);
}
if((S & 2) && ((S ^ pS) & 2)){
int sj = si;
while(sj + 1 <= m && s[sj + 1] == s[sj]) sj++;
LCT.add_segment_line(-2 * ca[i], (ll)(ca[i]) * ca[i] + mx, 0, s[sj] + 1);
}
pS = S;
}
cout << mx << '\n';
}