結果
| 問題 |
No.2404 Vertical Throw Up
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2023-08-05 01:30:06 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 78 ms / 2,000 ms |
| コード長 | 6,137 bytes |
| コンパイル時間 | 2,194 ms |
| コンパイル使用メモリ | 211,412 KB |
| 最終ジャッジ日時 | 2025-02-15 23:24:16 |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 30 |
ソースコード
#line 1 "combined.cpp"
#pragma region Macros
#include <bits/stdc++.h>
using namespace std;
template <class T> inline bool chmax(T &a, T b) {
if(a < b) {
a = b;
return 1;
}
return 0;
}
template <class T> inline bool chmin(T &a, T b) {
if(a > b) {
a = b;
return 1;
}
return 0;
}
#ifdef DEBUG
template <class T, class U>
ostream &operator<<(ostream &os, const pair<T, U> &p) {
os << '(' << p.first << ',' << p.second << ')';
return os;
}
template <class T> ostream &operator<<(ostream &os, const vector<T> &v) {
os << '{';
for(int i = 0; i < (int)v.size(); i++) {
if(i) { os << ','; }
os << v[i];
}
os << '}';
return os;
}
void debugg() { cerr << endl; }
template <class T, class... Args>
void debugg(const T &x, const Args &... args) {
cerr << " " << x;
debugg(args...);
}
#define debug(...) \
cerr << __LINE__ << " [" << #__VA_ARGS__ << "]: ", debugg(__VA_ARGS__)
#define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl
#else
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif
struct Setup {
Setup() {
cin.tie(0);
ios::sync_with_stdio(false);
cout << fixed << setprecision(15);
}
} __Setup;
using ll = long long;
#define OVERLOAD3(_1, _2, _3, name, ...) name
#define ALL(v) (v).begin(), (v).end()
#define RALL(v) (v).rbegin(), (v).rend()
#define REP1(i, n) for(int i = 0; i < int(n); i++)
#define REP2(i, a, b) for(int i = (a); i < int(b); i++)
#define REP(...) OVERLOAD3(__VA_ARGS__, REP2, REP1)(__VA_ARGS__)
#define UNIQUE(v) sort(ALL(v)), (v).erase(unique(ALL(v)), (v).end())
#define REVERSE(v) reverse(ALL(v))
#define SZ(v) ((int)(v).size())
const int INF = 1 << 30;
const ll LLINF = 1LL << 60;
constexpr int MOD = 1000000007;
constexpr int MOD2 = 998244353;
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};
void Case(int i) { cout << "Case #" << i << ": "; }
int popcount(int x) { return __builtin_popcount(x); }
ll popcount(ll x) { return __builtin_popcountll(x); }
#pragma endregion Macros
#line 2 "/Users/siro53/kyo-pro/compro_library/data-structure/segtree/li-chao-tree.hpp"
#line 7 "/Users/siro53/kyo-pro/compro_library/data-structure/segtree/li-chao-tree.hpp"
template <typename T, T inf>
class LiChaoTree {
public:
LiChaoTree() = default;
explicit LiChaoTree(const std::vector<T>& x): xs(x) {
std::sort(xs.begin(), xs.end());
xs.erase(std::unique(xs.begin(), xs.end()), xs.end());
n = (int)xs.size();
sz = 1;
while(sz < n) sz <<= 1;
while((int)xs.size() < sz) xs.emplace_back(xs.back() + 1);
node.resize(sz * 2, Line(T(0), inf));
}
// 直線 ax + b を追加
void add_line(T a, T b) {
update(a, b, 0, sz, 1);
}
// 線分 ax + b (x_l <= x < x_r) を追加
void add_segment(T a, T b, T x_l, T x_r) {
int l = std::lower_bound(xs.begin(), xs.end(), x_l) - xs.begin();
int r = std::lower_bound(xs.begin(), xs.end(), x_r) - xs.begin();
l += sz;
r += sz;
int width = 1, seg_idx_left = sz;
while(l < r) {
if(l & 1) {
int L = (l - seg_idx_left) * width;
int R = L + width;
update(a, b, L, R, l);
l++;
}
if(r & 1) {
r--;
int L = (r - seg_idx_left) * width;
int R = L + width;
update(a, b, L, R, r);
}
l >>= 1;
r >>= 1;
width <<= 1;
seg_idx_left >>= 1;
}
}
// min_{i} (a_i * x + b) を求める
T get_min(T x) {
int pos = std::lower_bound(xs.begin(), xs.end(), x) - xs.begin();
assert(0 <= pos and pos < sz);
pos += sz;
T ret = node[pos].eval(x);
while(pos > 1) {
pos >>= 1;
ret = std::min(ret, node[pos].eval(x));
}
return ret;
}
private:
struct Line {
T a, b;
Line(T a, T b): a(a), b(b) {}
inline T eval(T x) const { return (a * x + b); }
};
std::vector<T> xs;
std::vector<Line> node;
int n, sz;
void update(T a, T b, int l, int r, int pos) {
Line new_line(a, b);
while(1) {
bool is_over_l = (new_line.eval(xs[l]) >= node[pos].eval(xs[l]));
bool is_over_r = (new_line.eval(xs[r-1]) >= node[pos].eval(xs[r-1]));
if(is_over_l == is_over_r) {
if(!is_over_l) node[pos] = new_line;
break;
}
int mid = (l + r) >> 1;
bool is_over_mid = (new_line.eval(xs[mid]) >= node[pos].eval(xs[mid]));
if(!is_over_l and is_over_r) {
if(is_over_mid) {
r = mid;
pos = (pos << 1);
} else {
std::swap(new_line, node[pos]);
l = mid;
pos = (pos << 1) | 1;
}
} else {
if(is_over_mid) {
l = mid;
pos = (pos << 1) | 1;
} else {
std::swap(new_line, node[pos]);
r = mid;
pos = (pos << 1);
}
}
}
}
};
#line 78 "combined.cpp"
int main() {
ll a;
int Q;
cin >> a >> Q;
vector<tuple<int, ll, ll>> qs(Q);
vector<ll> xs;
REP(i, Q) {
int type;
cin >> type;
if(type == 1) {
ll S, T;
cin >> S >> T;
qs[i] = {1, S, T};
} else {
ll T;
cin >> T;
qs[i] = {2, T, -1};
xs.push_back(T);
}
}
LiChaoTree<ll, LLINF * 2> seg(xs);
for(const auto& [type, S, T] : qs) {
if(type == 1) {
seg.add_line(-a * (S + T), a * S * T);
} else {
ll ans = -seg.get_min(S) - a * S * S;
chmax(ans, 0LL);
cout << ans << endl;
}
}
}