結果
問題 | No.924 紲星 |
ユーザー | はまやんはまやん |
提出日時 | 2019-11-08 22:42:59 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 19,653 bytes |
コンパイル時間 | 3,317 ms |
コンパイル使用メモリ | 240,928 KB |
実行使用メモリ | 285,948 KB |
最終ジャッジ日時 | 2024-09-15 01:54:53 |
合計ジャッジ時間 | 9,522 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | 5 ms
5,376 KB |
testcase_04 | AC | 4 ms
5,376 KB |
testcase_05 | AC | 7 ms
5,376 KB |
testcase_06 | AC | 6 ms
5,376 KB |
testcase_07 | AC | 4 ms
5,376 KB |
testcase_08 | TLE | - |
testcase_09 | -- | - |
testcase_10 | -- | - |
testcase_11 | -- | - |
testcase_12 | -- | - |
testcase_13 | -- | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
ソースコード
#include<bits/stdc++.h> #define rep(i,a,b) for(int i=a;i<b;i++) #define rrep(i,a,b) for(int i=a;i>=b;i--) #define fore(i,a) for(auto &i:a) #define all(x) (x).begin(),(x).end() //#pragma GCC optimize ("-O3") using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); } typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60; 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 (b < a) { a = b; return 1; } return 0; } //--------------------------------------------------------------------------------------------------- typedef unsigned int u32; inline int popcount(u32 x) { x = x - ((x >> 1) & 0x55555555); x = (x & 0x33333333) + ((x >> 2) & 0x33333333); return ((x + (x >> 4) & 0xF0F0F0F) * 0x1010101) >> 24; } //(k+1)番目の1の立っている位置(最下位から)を返す //http://graphics.stanford.edu/~seander/bithacks.html#SelectPosFromMSBRank を参考にした inline int select32(u32 x, int k) { u32 a, b, c; int t, s; a = (x & 0x55555555) + ((x >> 1) & 0x55555555); b = (a & 0x33333333) + ((a >> 2) & 0x33333333); c = (b & 0x0f0f0f0f) + ((b >> 4) & 0x0f0f0f0f); t = (c & 0xff) + ((c >> 8) & 0xff); s = 0; s += ((t - k - 1) & 128) >> 3; k -= t & ((t - k - 1) >> 8); //if(k >= t) s += 16, k -= t; t = (c >> s) & 0xf; s += ((t - k - 1) & 128) >> 4; k -= t & ((t - k - 1) >> 8); //if(k >= t) s += 8, k -= t; t = (b >> s) & 0x7; s += ((t - k - 1) & 128) >> 5; k -= t & ((t - k - 1) >> 8); //if(k >= t) s += 4, k -= t; t = (a >> s) & 0x3; s += ((t - k - 1) & 128) >> 6; k -= t & ((t - k - 1) >> 8); //if(k >= t) s += 2, k -= t; t = (x >> s) & 0x1; s += ((t - k - 1) & 128) >> 7; //if(k >= t) s += 1; return s; } //※静的なデータ構造 //constructした後setを何回か呼び、その後buildを呼んだ後にrank,selectが行える struct FullyIndexableDictionary { static const int NOTFOUND = -1; static const int SELECTT_INTERVAL = 32; //SELECTT_INTERVAL >= 32 int length, blockslength, count; vector<u32> blocks; vector<int> ranktable, selecttable0, selecttable1; FullyIndexableDictionary(int len) : length(len) { blocks.resize((blockslength = (len + 31) / 32) + 1); } inline void set(int i) { blocks[i / 32] |= 1 << i % 32; } void build() { if (length == 0) { count = 0; return; } ranktable.assign(blockslength + 1, 0); selecttable0.clear(); selecttable1.clear(); int prev0 = 0, prev1 = 0, count0 = 0, count1 = 0; for (int i = 0; i < blockslength; i++) { ranktable[i] = count1; count1 += popcount(blocks[i]); count0 = 32 * (i + 1) - count1; if (prev1 < (count1 + SELECTT_INTERVAL - 1) / SELECTT_INTERVAL) selecttable1.push_back(i), prev1 = (count1 + SELECTT_INTERVAL - 1) / SELECTT_INTERVAL; if (prev0 < (count0 + SELECTT_INTERVAL - 1) / SELECTT_INTERVAL) selecttable0.push_back(i), prev0 = (count0 + SELECTT_INTERVAL - 1) / SELECTT_INTERVAL; } ranktable[blockslength] = count1; selecttable1.push_back(blockslength - 1); selecttable0.push_back(blockslength - 1); count = count1; } inline bool access(int pos) const { return blocks[pos / 32] >> pos % 32 & 1; } inline int rank(int pos) const { //[0..pos)の1の個数 int block_idx = pos / 32; return ranktable[block_idx] + popcount(blocks[block_idx] & (1U << pos % 32) - 1); } inline int rank(bool b, int pos) const { return b ? rank(pos) : pos - rank(pos); } inline int rank(bool b, int left, int right) const { return rank(b, right) - rank(b, left); } //O(log n)は重いよねえ。expect O(1) (たぶん) ならできるけど最悪ケースがなあ //あるいはメモリ4*32*n bytes でO(1)でもできるけど…ハッシュテーブルでうまくやればうまくできるか? template<bool b> int select(int k) const { //(k+1)番目のbの位置 if ((b ? count : length - count) <= k) return NOTFOUND; int selecttable_index = k / SELECTT_INTERVAL; int l = (b ? selecttable1 : selecttable0)[selecttable_index], u = (b ? selecttable1 : selecttable0)[selecttable_index + 1] + 1; //ブロックを二分探索 while (l + 1 < u) { int m = (l + u) / 2; ((b ? ranktable[m] : m * 32 - ranktable[m]) <= k ? l : u) = m; } return l * 32 + select32(b ? blocks[l] : ~blocks[l], k - (b ? ranktable[l] : 32 * l - ranktable[l])); } inline int select(bool b, int k) const { return b ? select<true>(k) : select<false>(k); } inline int select(bool b, int k, int left) const { return select(b, rank(b, left) + k); } }; inline unsigned int BITMASK(int i) { return (1 << i) - 1; } //※メモリ, 時間はだいたい支配的な部分のみ書く //メモリ: (length * bitsize / 8) bytes struct WaveletMatrix { typedef unsigned long long Val; static const int NOTFOUND = -1; static const Val UNDEFINED = Val(-1); static const int MAX_BITSIZE = 64; int length, bitsize; Val maxval; vector<FullyIndexableDictionary> dicts; vector<int> mids; //追加メモリ: (2 * length * sizeof Val) bytes //時間: bitsize * length * 大きめ void init(const vector<Val>& data) { length = data.size(); maxval = *max_element(data.begin(), data.end()); if (1ULL << (8 * sizeof(Val) - 1) <= maxval) bitsize = 8 * sizeof(Val); else for (bitsize = 0; Val(1) << bitsize <= maxval; bitsize++); dicts.assign(bitsize, length); mids.assign(bitsize, 0); vector<Val> datacurrent(data), datanext(length); for (int bit = 0; bit < bitsize; bit++) { int pos = 0; for (int i = 0; i < length; i++) if ((datacurrent[i] >> (bitsize - bit - 1) & 1) == 0) datanext[pos++] = datacurrent[i]; mids[bit] = pos; for (int i = 0; i < length; i++) if ((datacurrent[i] >> (bitsize - bit - 1) & 1) != 0) dicts[bit].set(i), datanext[pos++] = datacurrent[i]; dicts[bit].build(); datacurrent.swap(datanext); } } Val access(int pos) const { Val val = 0; for (int bit = 0; bit < bitsize; bit++) { bool dir = dicts[bit].access(pos); val = val << 1 | (dir ? 1 : 0); pos = dicts[bit].rank(dir, pos); if (dir) pos += mids[bit]; } return val; } int rank(Val val, int left, int right) const { if (val > maxval) return 0; for (int bit = 0; bit < bitsize; bit++) { bool dir = val >> (bitsize - bit - 1) & 1; left = dicts[bit].rank(dir, left), right = dicts[bit].rank(dir, right); if (dir) left += mids[bit], right += mids[bit]; } return right - left; } int rank(Val val, int right) const { return rank(val, 0, right); } int rank_all(Val val, int left, int right, int& out_lt, int& out_gt) const { if (val > maxval) { out_lt = right - left; out_gt = 0; return 0; } out_lt = out_gt = 0; for (int bit = 0; bit < bitsize; bit++) { bool dir = val >> (bitsize - bit - 1) & 1; int leftcount = dicts[bit].rank(dir, left), rightcount = dicts[bit].rank(dir, right); (dir ? out_lt : out_gt) += (right - left) - (rightcount - leftcount); left = leftcount, right = rightcount; if (dir) left += mids[bit], right += mids[bit]; } return right - left; } inline int rank_lt(Val val, int left, int right) const { int tmp_lt, tmp_gt; rank_all(val, left, right, tmp_lt, tmp_gt); return tmp_lt; } inline int rangefreq(int left, int right, Val bottom, Val up) { return rank_lt(up, left, right) - rank_lt(bottom, left, right); } //O(bitsize log length) (FID::selectがlog nで最悪の場合) int select(Val val, int k) const { if (val > maxval) return NOTFOUND; static int lefts[MAX_BITSIZE], rights[MAX_BITSIZE]; int left = 0, right = length; for (int bit = 0; bit < bitsize; bit++) { lefts[bit] = left, rights[bit] = right; bool dir = val >> (bitsize - bit - 1) & 1; left = dicts[bit].rank(dir, left), right = dicts[bit].rank(dir, right); if (dir) left += mids[bit], right += mids[bit]; } for (int bit = bitsize - 1; bit >= 0; bit--) { k = dicts[bit].select(val >> (bitsize - bit - 1) & 1, k, lefts[bit]); if (k == FullyIndexableDictionary::NOTFOUND || k >= rights[bit]) return NOTFOUND; k -= lefts[bit]; } return k; } int select(Val val, int k, int left) const { return select(val, k + rank(val, left)); } void quantile(int left, int right, int k, Val& out_val, int& out_k) const { if (right - left <= k) { out_val = UNDEFINED; out_k = NOTFOUND; return; } Val val = 0; for (int bit = 0; bit < bitsize; bit++) { int count = dicts[bit].rank(true, left, right); bool dir = k < count; val = val << 1 | (dir ? 1 : 0); if (!dir) k -= count; left = dicts[bit].rank(dir, left), right = dicts[bit].rank(dir, right); if (dir) left += mids[bit], right += mids[bit]; } out_val = val; out_k = k; } struct IdxVal { int idx; Val val; IdxVal() {} IdxVal(int i, Val v) : idx(i), val(v) {} }; inline Val quantile(int left, int right, int k) const { Val tmp_val; int tmp_k; quantile(left, right, k, tmp_val, tmp_k); return tmp_val; } inline IdxVal quantile_idxval(int left, int right, int k) const { Val tmp_val; int tmp_k; quantile(left, right, k, tmp_val, tmp_k); return IdxVal(select(tmp_val, tmp_k, left), tmp_val); } inline Val maximum(int left, int right) const { return quantile(left, right, 0); } inline Val minimum(int left, int right) const { return quantile(left, right, right - left - 1); } //区間がかぶってるとkとかがintより大きくなるよね void quantile_ranges(const vector<int>& lefts0, const vector<int>& rights0, int k, Val& out_val, int& out_k) const { int n = lefts0.size(); int width = 0; for (int i = 0; i < n; i++) width += rights0[i] - lefts0[i]; if (width <= k) { out_val = UNDEFINED; out_k = NOTFOUND; return; } static vector<int> lefts, rights; //自動変数だとメモリ確保の時間…と思ったけどこれだとどうだろう? lefts.assign(lefts0.begin(), lefts0.end()); rights.assign(rights0.begin(), rights0.end()); Val val = 0; for (int bit = 0; bit < bitsize; bit++) { int count = 0; for (int i = 0; i < n; i++) { count += dicts[bit].rank(true, lefts[i], rights[i]); } bool dir = k < count; val = val << 1 | (dir ? 1 : 0); if (!dir) k -= count; for (int i = 0; i < n; i++) { lefts[i] = dicts[bit].rank(dir, lefts[i]); rights[i] = dicts[bit].rank(dir, rights[i]); if (dir) lefts[i] += mids[bit], rights[i] += mids[bit]; } } out_val = val; out_k = k; } //区間がかぶってるとバグる //区間がソートされていないとバグる inline IdxVal quantile_ranges_idxval(const vector<int>& lefts, const vector<int>& rights, int k) const { int n = lefts.size(); Val tmp_val; int tmp_k; quantile_ranges(lefts, rights, k, tmp_val, tmp_k); for (int i = 0; i < n; i++) { if (tmp_k < rights[i] - lefts[i]) { return IdxVal(select(tmp_val, tmp_k, lefts[i]), tmp_val); } tmp_k -= rights[i] - lefts[i]; } return IdxVal(NOTFOUND, UNDEFINED); } struct Range { int left, right; int bit; Val val; Range(int l, int r, int b, Val v) : left(l), right(r), bit(b), val(v) {} }; //O(bitsize min(length, maxval) log min(length, maxval))? //priority_queueではやはり最悪ケースが… //でもランダムで適当(バラけすぎとかが無い)なデータに対しては結構速い template<typename F, typename FOut> int rectbfsk(const F& f, int left, int right, Val bottom, Val up, int k, FOut& out) const { int k0 = k; up = min(up, maxval + 1); priority_queue<Range, vector<Range>, F> q(f); q.push(Range(left, right, 0, 0)); while (k && !q.empty()) { Range t = q.top(); q.pop(); if (t.bit == bitsize) { f.pushvalues(out, t, k); } else { int leftcount = dicts[t.bit].rank(false, t.left); int rightcount = dicts[t.bit].rank(false, t.right); if (rightcount - leftcount != 0 && bottom <= ((t.val << (bitsize - t.bit)) | BITMASK(bitsize - t.bit - 1))) q.push(Range(leftcount, rightcount, t.bit + 1, t.val << 1)); if ((t.right - t.left) - (rightcount - leftcount) != 0 && (((t.val << 1 | 1) << (bitsize - t.bit - 1))) < up) { q.push(Range( (t.left - leftcount) + mids[t.bit], (t.right - rightcount) + mids[t.bit], t.bit + 1, t.val << 1 | 1)); } } } return k0 - k; } struct ValCount { Val val; int count; ValCount(Val v, int c) : val(v), count(c) {} ValCount() {} }; struct FreqList { inline bool operator()(const Range& x, const Range& y) const { return x.right - x.left < y.right - y.left || (x.right - x.left == y.right - y.left && x.val > y.val); } inline void pushvalues(vector<ValCount>& out, const Range& t, int& k) const { out.push_back(ValCount(t.val, t.right - t.left)); k--; } }; inline int topk(int left, int right, Val bottom, Val up, int k, vector<ValCount>& out) const { return rectbfsk<FreqList, vector<ValCount> >(FreqList(), left, right, bottom, up, k, out); } template<typename F, typename FOut> struct DfsInfo { const F& f; FOut& out; Val bottom, up; DfsInfo(const F& f_, FOut& o, Val b, Val u) : f(f_), out(o), bottom(b), up(u) {} }; //O(min(k bitsize, min(length, maxval)))? //minじゃなくてもう少しなめらかな関数で上界得られそうだけど…kつの中で幅に入らない分は共有されるイメージ //でもO(k bitsize)はやはり心強いな。k=1ならO(bitsize)となるわけだし template<typename F, typename FOut> void rectdfsk_dfs(const DfsInfo<F, FOut>& info, int bit, Val val, int left, int right, int& k) const { if (bit == bitsize) { info.f.pushvalues(info.out, val, right - left, k); return; } int leftcount = dicts[bit].rank(left); int rightcount = dicts[bit].rank(right); if (F::MAXF) { if (k > 0 && rightcount - leftcount != 0 && (((val << 1 | 1) << (bitsize - bit - 1)) < info.up)) rectdfsk_dfs<F, FOut>(info, bit + 1, val << 1 | 1, leftcount + mids[bit], rightcount + mids[bit], k); if (k > 0 && (right - left) - (rightcount - leftcount) != 0 && (info.bottom <= ((val << (bitsize - bit)) | BITMASK(bitsize - bit - 1)))) rectdfsk_dfs<F, FOut>(info, bit + 1, val << 1, left - leftcount, right - rightcount, k); } else { if (k > 0 && (right - left) - (rightcount - leftcount) != 0 && (info.bottom <= ((val << (bitsize - bit)) | BITMASK(bitsize - bit - 1)))) rectdfsk_dfs<F, FOut>(info, bit + 1, val << 1, left - leftcount, right - rightcount, k); if (k > 0 && rightcount - leftcount != 0 && (((val << 1 | 1) << (bitsize - bit - 1)) < info.up)) rectdfsk_dfs<F, FOut>(info, bit + 1, val << 1 | 1, leftcount + mids[bit], rightcount + mids[bit], k); } } template<bool maxf> struct MinMaxList { enum { MAXF = maxf }; inline void pushvalues(vector<ValCount>& out, Val val, int count, int& k) const { out.push_back(ValCount(val, min(k, count))); k -= min(k, count); } }; template<typename F, typename FOut> int rectdfsk(const F& f, int left, int right, Val bottom, Val up, int k, FOut& out) const { rectdfsk_dfs<F, FOut>(DfsInfo<F, FOut>(f, out, bottom, up), 0, 0, left, right, k); return k; } template<bool maxf> int rectminmaxk(int left, int right, Val bottom, Val up, int k, vector<ValCount>& out) const { return rectdfsk<MinMaxList<maxf>, vector<ValCount> >(MinMaxList<maxf>(), left, right, bottom, up, k, out); } }; ostream& operator<<(ostream& o, const WaveletMatrix::IdxVal& idxval) { return o << "(" << idxval.idx << ": " << idxval.val << ")"; } // StaticHealthy2DSegtree #define def 0 using V = ll; V comp(V& l, V& r) { return l + r; }; struct SegTree { //[l,r) int NV; vector<V> val; void init(int n) { NV = 1; while (NV < n) NV *= 2; val = vector<V>(NV * 2, def); } V get(int x, int y, int l, int r, int k) { if (r <= x || y <= l) return def; if (x <= l && r <= y)return val[k]; auto a = get(x, y, l, (l + r) / 2, k * 2); auto b = get(x, y, (l + r) / 2, r, k * 2 + 1); return comp(a, b); } V get(int x, int y) { return get(x, y, 0, NV, 1); } void update(int i, V v) { i += NV; val[i] = v; while (i > 1)i >>= 1, val[i] = comp(val[i * 2], val[i * 2 + 1]); } void compupdate(int i, V v) { update(i, comp(v, val[i + NV])); } void add(int i, V v) { update(i, val[i + NV] + v); } V operator[](int x) { return get(x, x + 1); } }; struct StaticHealthy2DSegTree { int NV; vector<SegTree> st; vector<vector<int>> index; void init(vector<vector<pair<int, V>>>& v) { int n = v.size(); NV = 1; while (NV < n) NV *= 2; index.resize(2 * NV); rep(i, 0, n) fore(p, v[i]) index[i + NV].push_back(p.first); rrep(i, NV * 2 - 1, 1) { sort(index[i].begin(), index[i].end()); index[i].erase(unique(index[i].begin(), index[i].end()), index[i].end()); fore(j, index[i]) index[i / 2].push_back(j); } st.resize(2 * NV); rep(i, 1, NV * 2) st[i].init(index[i].size()); rep(i, 0, n) fore(p, v[i]) { int j = lower_bound(index[i + NV].begin(), index[i + NV].end(), p.first) - index[i + NV].begin(); st[i + NV].update(j, p.second); } rrep(i, NV * 2 - 1, 2) { rep(j, 0, index[i].size()) { V v = st[i][j]; int k = lower_bound(index[i / 2].begin(), index[i / 2].end(), index[i][j]) - index[i / 2].begin(); st[i / 2].compupdate(k, v); } } } V get(int sx, int tx, int sy, int ty, int k, int l, int r) { assert(k < NV * 2); assert(l < r); if (r <= sx or tx <= l) return def; if (sx <= l and r <= tx) { int syy = lower_bound(index[k].begin(), index[k].end(), sy) - index[k].begin(); int tyy = lower_bound(index[k].begin(), index[k].end(), ty) - index[k].begin(); return st[k].get(syy, tyy); } int md = (l + r) / 2; V le = get(sx, tx, sy, ty, k * 2, l, md); V ri = get(sx, tx, sy, ty, k * 2 + 1, md, r); return comp(le, ri); } V get(int sx, int tx, int sy, int ty) { return get(sx, tx, sy, ty, 1, 0, NV); } }; /*--------------------------------------------------------------------------------------------------- ∧_∧ ∧_∧ (´<_` ) Welcome to My Coding Space! ( ´_ゝ`) / ⌒i @hamayanhamayan / \ | | / / ̄ ̄ ̄ ̄/ | __(__ニつ/ _/ .| .|____ \/____/ (u ⊃ ---------------------------------------------------------------------------------------------------*/ int N, Q, A[201010]; WaveletMatrix wm; StaticHealthy2DSegTree st1, st2; //--------------------------------------------------------------------------------------------------- void _main() { cin >> N >> Q; rep(i, 0, N) cin >> A[i]; vector<WaveletMatrix::Val> v; rep(i, 0, N) v.push_back(A[i] + inf); wm.init(v); vector<vector<pair<int, ll>>> v2(N); rep(i, 0, N) v2[i].push_back({ A[i], A[i] }); st1.init(v2); vector<vector<pair<int, ll>>> v3(N); rep(i, 0, N) v3[i].push_back({ A[i], 1 }); st2.init(v3); rep(q, 0, Q) { int L, R; cin >> L >> R; L--; int cnt = R - L; int cent = wm.quantile(L, R, cnt / 2) - inf; ll ans = 0; ans += 1LL * cent * st2.get(L, R, -inf, cent) - st1.get(L, R, -inf, cent); ans += st1.get(L, R, cent, inf) - 1LL * cent * st2.get(L, R, cent, inf); printf("%lld\n", ans); } }