結果
問題 | No.1079 まお |
ユーザー | fuppy_kyopro |
提出日時 | 2020-06-12 23:07:34 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 173 ms / 2,000 ms |
コード長 | 9,984 bytes |
コンパイル時間 | 2,237 ms |
コンパイル使用メモリ | 199,196 KB |
実行使用メモリ | 13,056 KB |
最終ジャッジ日時 | 2024-06-24 05:50:20 |
合計ジャッジ時間 | 5,535 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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
6,816 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 5 ms
6,944 KB |
testcase_08 | AC | 4 ms
6,944 KB |
testcase_09 | AC | 4 ms
6,944 KB |
testcase_10 | AC | 4 ms
6,944 KB |
testcase_11 | AC | 4 ms
6,940 KB |
testcase_12 | AC | 48 ms
8,064 KB |
testcase_13 | AC | 54 ms
8,960 KB |
testcase_14 | AC | 73 ms
9,984 KB |
testcase_15 | AC | 80 ms
10,880 KB |
testcase_16 | AC | 88 ms
11,688 KB |
testcase_17 | AC | 131 ms
11,224 KB |
testcase_18 | AC | 82 ms
11,136 KB |
testcase_19 | AC | 173 ms
11,264 KB |
testcase_20 | AC | 143 ms
11,312 KB |
testcase_21 | AC | 126 ms
11,136 KB |
testcase_22 | AC | 111 ms
13,020 KB |
testcase_23 | AC | 108 ms
13,056 KB |
testcase_24 | AC | 110 ms
12,964 KB |
testcase_25 | AC | 112 ms
12,968 KB |
testcase_26 | AC | 118 ms
13,056 KB |
testcase_27 | AC | 62 ms
8,240 KB |
testcase_28 | AC | 74 ms
11,860 KB |
testcase_29 | AC | 154 ms
12,964 KB |
testcase_30 | AC | 149 ms
13,040 KB |
testcase_31 | AC | 71 ms
8,320 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define DEBUG(x) cerr<<#x<<": "<<x<<endl; #define DEBUG_VEC(v) cerr<<#v<<":";for(int i=0;i<v.size();i++) cerr<<" "<<v[i]; cerr<<endl; #define DEBUG_MAT(v) cerr<<#v<<endl;for(int i=0;i<v.size();i++){for(int j=0;j<v[i].size();j++) {cerr<<v[i][j]<<" ";}cerr<<endl;} typedef long long ll; // #define int ll #define vi vector<int> #define vl vector<ll> #define vii vector< vector<int> > #define vll vector< vector<ll> > #define vs vector<string> #define pii pair<int,int> #define pis pair<int,string> #define psi pair<string,int> #define pll pair<ll,ll> template<class S, class T> pair<S, T> operator+(const pair<S, T> &s, const pair<S, T> &t) { return pair<S, T>(s.first + t.first, s.second + t.second); } template<class S, class T> pair<S, T> operator-(const pair<S, T> &s, const pair<S, T> &t) { return pair<S, T>(s.first - t.first, s.second - t.second); } template<class S, class T> ostream& operator<<(ostream& os, pair<S, T> p) { os << "(" << p.first << ", " << p.second << ")"; return os; } #define X first #define Y second #define rep(i,n) for(int i=0;i<(int)(n);i++) #define rep1(i,n) for(int i=1;i<=(int)(n);i++) #define rrep(i,n) for(int i=(int)(n)-1;i>=0;i--) #define rrep1(i,n) for(int i=(int)(n);i>0;i--) #define REP(i,a,b) for(int i=a;i<b;i++) #define in(x, a, b) (a <= x && x < b) #define all(c) c.begin(),c.end() template<class T> bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; } template<class T> bool chmin(T &a, const T &b) { if (a>b) { a = b; return 1; } return 0; } #define UNIQUE(v) v.erase(std::unique(v.begin(), v.end()), v.end()); const ll inf = 1000000001; const ll INF = (ll)1e18 + 1; const long double pi = 3.1415926535897932384626433832795028841971L; #define Sp(p) cout<<setprecision(25)<< fixed<<p<<endl; //int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1}; //int dx2[8] = { 1,1,0,-1,-1,-1,0,1 }, dy2[8] = { 0,1,1,1,0,-1,-1,-1 }; vi dx = {1, 0, -1, 0}, dy = {0, 1, 0, -1}; vi dx2 = { 1,1,0,-1,-1,-1,0,1 }, dy2 = { 0,1,1,1,0,-1,-1,-1 }; #define fio() cin.tie(0); ios::sync_with_stdio(false); // const ll MOD = 1000000007; const ll MOD = 998244353; // #define mp make_pair //#define endl '\n' template <typename T> class SegmentTree { public: using F = function<T(T&, T&)>; int n; vector<T > dat; T e; // �P�ʌ� F query_func; F update_func; SegmentTree(vector<T> a, F query_func, F update_func, T e) :n(a.size()), query_func(query_func), update_func(update_func), e(e) { dat.resize(4 * n); init(0, 0, n, a); } void init(int k, int l, int r, vector<T> &a) { if (r - l == 1) { dat[k] = a[l]; } else { int lch = 2 * k + 1, rch = 2 * k + 2; init(lch, l, (l + r) / 2, a); init(rch, (l + r) / 2, r, a); dat[k] = query_func(dat[lch], dat[rch]); } } //k�Ԗڂ̒l��a�ɕύX void update(int k, T a, int v, int l, int r) { if (r - l == 1) { dat[v] = update_func(dat[v], a); } else { if (k < (l + r) / 2) update(k, a, 2 * v + 1, l, (l + r) / 2); else { update(k, a, 2 * v + 2, (l + r) / 2, r); } dat[v] = query_func(dat[v * 2 + 1], dat[v * 2 + 2]); } } //[a,b)�̍ŏ��l�����߂� //���̂ق��̈����͌v�Z�̊ȒP�̂��߂̈��� //k�͐ړ_�̔ԍ�,l,r�͂��̐ړ_��[l,r)�ɑΉ����Ă��邱�Ƃ�\�� //�]���āA�O�����query(a,b,0,0,n)�Ƃ��Ă�� T query(int a, int b, int k, int l, int r) { if (r <= a || b <= l) { return e; } if (a <= l && r <= b) { return dat[k]; } else { T ul = query(a, b, k * 2 + 1, l, (l + r) / 2); T ur = query(a, b, k * 2 + 2, (l + r) / 2, r); return query_func(ul, ur); } } // ���������ĉE��T�� int find(int a, int b, int k, int l, int r, int x) { // ������ if (dat[k] < x || r <= a || b <= l) return -1; if (l + 1 == r) { // ������ if (dat[k] >= x) return l; else return -1; } int rv = find(a, b, 2 * k + 2, (l + r) / 2, r, x); if (rv != -1) return rv; return find(a, b, 2 * k + 1, l, (l + r) / 2, x); } }; pii f(pii a, pii b) { if (a.first == b.first) { return pii(a.first, a.second + b.second); } else { return min(a, b); } } pii g(pii, pii b) {return b;} template< typename Semigroup > struct DisjointSparseTable { using F = function< Semigroup(Semigroup, Semigroup) >; const F f; vector< vector< Semigroup > > st; DisjointSparseTable(const vector< Semigroup > v, const F f) : f(f) { int b = 0; while((1 << b) <= v.size()) ++b; st.resize(b, vector< Semigroup >(v.size(), Semigroup())); for(int i = 0; i < v.size(); i++) st[0][i] = v[i]; for(int i = 1; i < b; i++) { int shift = 1 << i; for(int j = 0; j < v.size(); j += shift << 1) { int t = min(j + shift, (int) v.size()); st[i][t - 1] = v[t - 1]; for(int k = t - 2; k >= j; k--) st[i][k] = f(v[k], st[i][k + 1]); if(v.size() <= t) break; st[i][t] = v[t]; int r = min(t + shift, (int) v.size()); for(int k = t + 1; k < r; k++) st[i][k] = f(st[i][k - 1], v[k]); } } } Semigroup query(int l, int r) { if(l >= --r) { if (l > r) return pii(-inf, 0); else return st[0][l]; } int p = 31 - __builtin_clz(l ^ r); return f(st[p][l], st[p][r]); } }; signed main() { fio(); int n, k; cin >> n >> k; vi a(n); vector<pii> temp(n); map<int, int> last_idx; rep (i, n) { cin >> a[i]; temp[i].first = a[i]; temp[i].second = 1; last_idx[a[i]] = inf; } SegmentTree<pii> seg(temp, f, g, pii(inf, 0)); // DisjointSparseTable<pii> seg(temp, f); vi next_idx(n); rrep (i, n) { next_idx[i] = last_idx[a[i]]; last_idx[a[i]] = i; } ll ans = 0; for (auto iiitr = last_idx.begin(); iiitr != last_idx.end(); iiitr++) { ll x = iiitr->first; ll y = k - x; if (last_idx.count(y) == 0) continue; pll now(0, 0); int pre = -1; int li = last_idx[x], ri = last_idx[y]; using P = pair<int, pll>; set<P> one, two; while (li != inf or ri != inf) { // DEBUG(pii(x, y)); // DEBUG(pii(li, ri)); // DEBUG(now); // DEBUG(ans); int ni; if (li <= ri) { ni = li; } else { ni = ri; } pii mi = seg.query(pre + 1, ni + 1, 0, 0, seg.n); // pll mi = seg.query(pre + 1, ni + 1); P add1(mi.first, pii(0, 0)), add2(mi.first, pii(0, 0)); auto itr = one.end(); while (true) { if (itr == one.begin()) break; itr--; if (itr->first < mi.first) break; if (mi.second > 1) { add2.second.first += itr->second.first; add2.second.second += itr->second.second; } else { if (mi.first == itr->first) { add2.second.first += itr->second.first; add2.second.second += itr->second.second; } else { add1.second.first += itr->second.first; add1.second.second += itr->second.second; } } now.first -= itr->second.first; now.second -= itr->second.second; // one.erase(itr); } while (true) { auto itr = one.end(); if (itr == one.begin()) break; itr--; if (itr->first < mi.first) break; one.erase(itr); } itr = two.end(); while (true) { if (itr == two.begin()) break; itr--; if (itr->first < mi.first) break; if (mi.second > 1) { add2.second.first += itr->second.first; add2.second.second += itr->second.second; } else { if (mi.first == itr->first) { add2.second.first += itr->second.first; add2.second.second += itr->second.second; } else { add1.second.first += itr->second.first; add1.second.second += itr->second.second; } } // two.erase(itr); } while (true) { auto itr = two.end(); if (itr == two.begin()) break; itr--; if (itr->first < mi.first) break; two.erase(itr); } now.first += add1.second.first; now.second += add1.second.second; if (add1.second.second > 0) one.insert(add1); if (add2.second.second > 0) two.insert(add2); if (ni == li) { P add(x, pii(ni, 1)); now.first += ni; now.second += 1; auto itr = one.lower_bound(P(x, pll(-INF, -INF))); if (itr != one.end() and itr->first == x) { add.second.first += itr->second.first; add.second.second += itr->second.second; one.erase(itr); } one.insert(add); li = next_idx[li]; } else { ans += -now.first + now.second * (ri + 1); ri = next_idx[ri]; } pre = ni; } } cout << ans << endl; }