제출 #263166

#제출 시각아이디문제언어결과실행 시간메모리
263166Haunted_CppSwimming competition (LMIO18_plaukimo_varzybos)C++17
30 / 100
2078 ms79304 KiB
/** * author: Haunted_Cpp **/ #include <bits/stdc++.h> using namespace std; //~ #pragma GCC optimize("Ofast") //~ #pragma GCC target("fma,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native") //~ #pragma GCC optimize("unroll-loops") template<typename T> ostream &operator << (ostream &os, const vector<T> &v) { os << '{'; string sep; for (const auto &x : v) os << sep << x, sep = ", "; return os << '}'; } template<typename T, size_t size> ostream &operator << (ostream &os, const array<T, size> &arr) { os << '{'; string sep; for (const auto &x : arr) os << sep << x, sep = ", "; return os << '}'; } template<typename A, typename B> ostream &operator << (ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; } void debug_out() { cerr << endl; } template<typename Head, typename... Tail> void debug_out(Head H, Tail... T) { cerr << ' ' << H; debug_out(T...); } #ifdef LOCAL #define debug(...) cerr << "(" << #__VA_ARGS__ << "):", debug_out(__VA_ARGS__) #else #define debug(...) 47 #endif class SegmentTree { private: const int LO, HI; struct Node { int mn; int lazy; Node () { mn = 1e9; lazy = 0; } }; vector<Node> seg; void push(int l, int r, int node) { if (seg[node].lazy == 0) return; seg[node].mn += seg[node].lazy; if (l != r) { seg[2 * node + 1].lazy += seg[node].lazy; seg[2 * node + 2].lazy += seg[node].lazy; } seg[node].lazy = 0; } void modify(int where, int delta, int l, int r, int node) { push(l, r, node); if (l > where || r < where) return; if (l >= where && r <= where) { seg[node].mn = delta; return; } const int mid = l + (r - l) / 2; modify(where, delta, l, mid, 2 * node + 1); modify(where, delta, mid + 1, r, 2 * node + 2); seg[node].mn = min(seg[2 * node + 1].mn, seg[2 * node + 2].mn); } void range_update(int ql, int qr, int delta, int l, int r, int node) { push(l, r, node); if (l > qr || r < ql) return; if (l >= ql && r <= qr) { seg[node].lazy = delta; push(l, r, node); return; } const int mid = l + (r - l) / 2; range_update(ql, qr, delta, l, mid, 2 * node + 1); range_update(ql, qr, delta, mid + 1, r, 2 * node + 2); seg[node].mn = min(seg[2 * node + 1].mn, seg[2 * node + 2].mn); } int query(int ql, int qr, int l, int r, int node) { push(l, r, node); if (l > qr || r < ql) return 1e9; if (l >= ql && r <= qr) return seg[node].mn; const int mid = l + (r - l) / 2; return min(query(ql, qr, l, mid, 2 * node + 1), query(ql, qr, mid + 1, r, 2 * node + 2)); } public: SegmentTree(int n) : LO(0), HI(n - 1) { seg.resize(4 * n); } void modify(int where, int delta) { modify(where, delta, LO, HI, 0); } void range_update(int ql, int qr, int delta) { ql = max(ql, 0); range_update(ql, qr, delta, LO, HI, 0); } int query(int ql, int qr) { ql = max(ql, 0); return query(ql, qr, LO, HI, 0); } }; int main () { ios::sync_with_stdio(0); cin.tie(0); int n, lo, hi; cin >> n >> lo >> hi; vector<int> arr(n + 1); for (int i = 1; i <= n; i++) cin >> arr[i]; sort(arr.begin(), arr.end()); vector<int> dp(n + 1); const int INF = 1e9; SegmentTree seg_dp(n + 1), seg_val(n + 1); priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> pq; auto add = [&](int where) { if (where == n) return; const int A = dp[where]; const int B = arr[where + 1]; const int CHANGE = B + A + 1; seg_dp.modify(where, A); pq.push({CHANGE, where}); }; auto update = [&](int delta) { while(!pq.empty()) { int cur = pq.top().first; if (cur > delta) break; int where = pq.top().second; pq.pop(); seg_dp.modify(where, INF); seg_val.modify(where, delta - arr[where + 1]); } }; for (int i = 0; i <= n; i++) dp[i] = INF; dp[0] = 0; add(0); for (int i = 1; i <= n; i++) { if (i > 1) { const int D = arr[i] - arr[i - 1]; seg_val.range_update(0, i - 1, +D); } update(arr[i]); if (i >= lo){ dp[i] = min(seg_dp.query(i - hi, i - lo), seg_val.query(i - hi, i - lo)); add(i); } } cout << dp[n] << '\n'; return 0; }
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