結果
問題 | No.2764 Warp Drive Spacecraft |
ユーザー | shobonvip |
提出日時 | 2024-05-17 22:45:00 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 501 ms / 3,000 ms |
コード長 | 4,558 bytes |
コンパイル時間 | 4,658 ms |
コンパイル使用メモリ | 274,948 KB |
実行使用メモリ | 26,044 KB |
最終ジャッジ日時 | 2024-07-17 20:24:04 |
合計ジャッジ時間 | 14,296 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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 | AC | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 1 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 1 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,940 KB |
testcase_07 | AC | 2 ms
6,944 KB |
testcase_08 | AC | 1 ms
6,940 KB |
testcase_09 | AC | 1 ms
6,940 KB |
testcase_10 | AC | 3 ms
6,944 KB |
testcase_11 | AC | 2 ms
6,940 KB |
testcase_12 | AC | 2 ms
6,940 KB |
testcase_13 | AC | 2 ms
6,940 KB |
testcase_14 | AC | 2 ms
6,944 KB |
testcase_15 | AC | 2 ms
6,944 KB |
testcase_16 | AC | 254 ms
21,908 KB |
testcase_17 | AC | 261 ms
21,976 KB |
testcase_18 | AC | 245 ms
22,180 KB |
testcase_19 | AC | 361 ms
20,048 KB |
testcase_20 | AC | 370 ms
21,444 KB |
testcase_21 | AC | 367 ms
20,384 KB |
testcase_22 | AC | 381 ms
21,248 KB |
testcase_23 | AC | 365 ms
20,192 KB |
testcase_24 | AC | 386 ms
21,588 KB |
testcase_25 | AC | 373 ms
21,276 KB |
testcase_26 | AC | 476 ms
25,208 KB |
testcase_27 | AC | 471 ms
25,208 KB |
testcase_28 | AC | 487 ms
25,616 KB |
testcase_29 | AC | 489 ms
25,596 KB |
testcase_30 | AC | 464 ms
25,128 KB |
testcase_31 | AC | 485 ms
26,044 KB |
testcase_32 | AC | 501 ms
26,028 KB |
testcase_33 | AC | 241 ms
15,444 KB |
testcase_34 | AC | 239 ms
15,452 KB |
testcase_35 | AC | 240 ms
15,348 KB |
testcase_36 | AC | 272 ms
22,044 KB |
testcase_37 | AC | 247 ms
19,484 KB |
testcase_38 | AC | 209 ms
17,664 KB |
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; } template <typename T, T x_low, T x_high, T id> struct DynamicLiChaoTree { struct Line { T a, b; Line(T a, T b) : a(a), b(b) {} inline T get(T x) const { return a * x + b; } }; struct Node { Line x; Node *l, *r; Node(const Line &x) : x{x}, l{nullptr}, r{nullptr} {} }; Node *root; DynamicLiChaoTree() : root{nullptr} {} Node *add_line(Node *t, Line &x, const T &l, const T &r, const T &x_l, const T &x_r) { if (!t) return new Node(x); T t_l = t->x.get(l), t_r = t->x.get(r); if (t_l <= x_l && t_r <= x_r) { return t; } else if (t_l >= x_l && t_r >= x_r) { t->x = x; return t; } else { T m = (l + r) / 2; if (m == r) --m; T t_m = t->x.get(m), x_m = x.get(m); if (t_m > x_m) { swap(t->x, x); if (x_l >= t_l) t->l = add_line(t->l, x, l, m, t_l, t_m); else t->r = add_line(t->r, x, m + 1, r, t_m + x.a, t_r); } else { if (t_l >= x_l) t->l = add_line(t->l, x, l, m, x_l, x_m); else t->r = add_line(t->r, x, m + 1, r, x_m + x.a, x_r); } return t; } } void add_line(const T &a, const T &b) { Line x(a, b); root = add_line(root, x, x_low, x_high, x.get(x_low), x.get(x_high)); } Node *add_segment(Node *t, Line &x, const T &a, const T &b, const T &l, const T &r, const T &x_l, const T &x_r) { if (r < a || b < l) return t; if (a <= l && r <= b) { Line y{x}; return add_line(t, y, l, r, x_l, x_r); } if (t) { T t_l = t->x.get(l), t_r = t->x.get(r); if (t_l <= x_l && t_r <= x_r) return t; } else { t = new Node(Line(0, id)); } T m = (l + r) / 2; if (m == r) --m; T x_m = x.get(m); t->l = add_segment(t->l, x, a, b, l, m, x_l, x_m); t->r = add_segment(t->r, x, a, b, m + 1, r, x_m + x.a, x_r); return t; } void add_segment(const T &l, const T &r, const T &a, const T &b) { Line x(a, b); root = add_segment(root, x, l, r - 1, x_low, x_high, x.get(x_low), x.get(x_high)); } T query(const Node *t, const T &l, const T &r, const T &x) const { if (!t) return id; if (l == r) return t->x.get(x); T m = (l + r) / 2; if (m == r) --m; if (x <= m) return min(t->x.get(x), query(t->l, l, m, x)); else return min(t->x.get(x), query(t->r, m + 1, r, x)); } T query(const T &x) const { return query(root, x_low, x_high, x); } }; vector<ll> dijk(int st, int n, vector<vector<pair<int,ll>>> &ikeru){ vector<ll> d(n,1e18); priority_queue<pair<ll,int>> pq; pq.push(pair(0, st)); d[st] = 0; while(!pq.empty()){ auto [tmp, i] = pq.top(); pq.pop(); tmp = -tmp; if(tmp>d[i]) continue; for (auto [j,c]: ikeru[i]){ if (chmin(d[j], tmp+c)){ pq.push(pair(-d[j], j)); } } } return d; } int main(){ int n, m; cin >> n >> m; vector<ll> w(n); rep(i,0,n){ cin >> w[i]; } vector ikeru(n, vector<pair<int,ll>>(0)); rep(i,0,m){ int u, v; cin >> u >> v; u--; v--; ll t; cin >> t; ikeru[u].push_back(pair(v, t)); ikeru[v].push_back(pair(u, t)); } vector<ll> d1 = dijk(0, n, ikeru); vector<ll> d2 = dijk(n-1, n, ikeru); DynamicLiChaoTree<ll, (ll)0, (ll)1e9, (ll)4e18> lichao; rep(i,0,n){ if(d2[i] != (ll)1e18){ lichao.add_line(w[i], d2[i]); } } ll ans = d1[n-1]; rep(i,0,n){ if(d1[i] != (ll)1e18){ chmin(ans, lichao.query(w[i]) + d1[i]); } } cout << ans << '\n'; }