結果
問題 | No.127 門松もどき |
ユーザー | 🍮かんプリン |
提出日時 | 2020-10-21 19:30:01 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
MLE
|
実行時間 | - |
コード長 | 3,871 bytes |
コンパイル時間 | 2,001 ms |
コンパイル使用メモリ | 181,984 KB |
実行使用メモリ | 688,128 KB |
最終ジャッジ日時 | 2024-07-21 08:59:50 |
合計ジャッジ時間 | 43,386 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | MLE | - |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 207 ms
55,552 KB |
testcase_07 | AC | 3 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 3 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 6 ms
5,376 KB |
testcase_12 | AC | 1,953 ms
401,920 KB |
testcase_13 | MLE | - |
testcase_14 | AC | 2,403 ms
475,392 KB |
testcase_15 | MLE | - |
testcase_16 | AC | 2,401 ms
462,080 KB |
testcase_17 | MLE | - |
testcase_18 | AC | 2,257 ms
446,976 KB |
testcase_19 | AC | 1,204 ms
241,536 KB |
testcase_20 | AC | 1,227 ms
247,296 KB |
testcase_21 | AC | 522 ms
128,000 KB |
testcase_22 | MLE | - |
testcase_23 | MLE | - |
testcase_24 | MLE | - |
testcase_25 | MLE | - |
testcase_26 | AC | 1,483 ms
286,720 KB |
ソースコード
/** * @FileName a.cpp * @Author kanpurin * @Created 2020.10.21 19:29:45 **/ #include "bits/stdc++.h" using namespace std; typedef long long ll; template < class Monoid > struct SegmentTree { private: using Func = std::function< Monoid(Monoid, Monoid) >; Func F; Monoid UNITY; int n; std::vector< Monoid > node; int _binary_search(int a, int b, const std::function<bool(Monoid)> &f, Monoid &s, int k = 0, int l = 0, int r = -1) { if (r < 0) r = n; if (r <= a || b <= l) return n; if (a <= l && r <= b && !f(F(s,node[k]))) { s = F(s,node[k]); return n; } if (l == r - 1) {s = F(s,node[k]); return l;} int ret = _binary_search(a, b, f, s, 2 * k + 1, l, (r - l) / 2 + l); return ret != n ? ret : _binary_search(a, b, f, s, 2 * k + 2, (r - l) / 2 + l, r); } public: SegmentTree() {} SegmentTree(const std::vector< Monoid > &v, const Func f, const Monoid &unity) { F = f; UNITY = unity; int sz = v.size(); n = 1; while (n < sz) n <<= 1; node.resize(n * 2 - 1, UNITY); for (int i = 0; i < sz; i++) node[i + n - 1] = v[i]; build(); } SegmentTree(int m, const Monoid &val, const Func f, const Monoid &unity) { F = f; UNITY = unity; n = 1; while (n < m) n <<= 1; node.resize(n * 2 - 1, UNITY); if (val != UNITY) { for (int i = 0; i < m; i++) node[i + n - 1] = val; build(); } } void set(int k, const Monoid &x) { node[n + k - 1] = x; } void build() { for (int i = n - 2; i >= 0; i--) node[i] = F(node[2 * i + 1], node[2 * i + 2]); } void update_query(int x, const Monoid &val) { if (x >= n || x < 0) return; x += n - 1; node[x] = val; while (x > 0) { x = (x - 1) >> 1; node[x] = F(node[2 * x + 1], node[2 * x + 2]); } } Monoid get_query(int l, int r) { Monoid L = UNITY, R = UNITY; if (l < 0) l = 0; if (r < 0) return UNITY; if (l >= n) return UNITY; if (r >= n) r = n; for (l += n, r += n; l < r; l >>= 1, r >>= 1) { if (l & 1) L = F(L, node[l++ - 1]); if (r & 1) R = F(node[--r - 1], R); } return F(L, R); } int binary_search(int l, int r, const std::function<bool(Monoid)> &f) { Monoid s = UNITY; int ret = _binary_search(l,r,f,s); return ret != n ? ret : -1; } Monoid operator[](int x) const { return node[n + x - 1]; } int size() { return n; } void print() { for (int i = 0; i < n; i++) { std::cout << i << "\t: " << node[n + i - 1] << std::endl; } } }; int main() { int n;cin >> n; vector<int> a(n); for (int i = 0; i < n; i++) { cin >> a[i]; } vector<SegmentTree<int>> seg1(n,SegmentTree<int>(n,0,[](int a,int b){return max(a,b);},0)); vector<SegmentTree<int>> seg2(n,SegmentTree<int>(n,0,[](int a,int b){return max(a,b);},0)); vector<vector<vector<int>>> dp(n,vector<vector<int>>(n,vector<int>(2,0))); for (int i = 0; i < n; i++) { dp[i][i][0] = dp[i][i][1] = 1; seg1[i].update_query(i,1); seg2[i].update_query(i,1); } int ans = 1; for (int t = 1; t < n; t++) { for (int i = 0; i < n-t; i++) { int j = i+t; if (a[i] < a[j]) dp[i][j][0] = seg2[j].get_query(i+1,i+t+1) + 1; if (a[i] > a[j]) dp[i][j][1] = seg1[i].get_query(j-t,j) + 1; ans = max({ans,dp[i][j][0],dp[i][j][1]}); seg1[i].update_query(j,dp[i][j][0]); seg2[j].update_query(i,dp[i][j][1]); } } cout << ans << endl; return 0; }