結果
問題 | No.924 紲星 |
ユーザー | polylogK |
提出日時 | 2019-09-05 21:41:34 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
RE
(最新)
AC
(最初)
|
実行時間 | - |
コード長 | 5,702 bytes |
コンパイル時間 | 2,213 ms |
コンパイル使用メモリ | 189,924 KB |
実行使用メモリ | 7,552 KB |
最終ジャッジ日時 | 2024-09-15 05:25:20 |
合計ジャッジ時間 | 5,026 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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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 | 5 ms
7,552 KB |
testcase_01 | AC | 4 ms
7,424 KB |
testcase_02 | AC | 5 ms
7,424 KB |
testcase_03 | AC | 7 ms
7,424 KB |
testcase_04 | AC | 6 ms
7,424 KB |
testcase_05 | AC | 9 ms
7,552 KB |
testcase_06 | AC | 7 ms
7,424 KB |
testcase_07 | AC | 6 ms
7,552 KB |
testcase_08 | RE | - |
testcase_09 | RE | - |
testcase_10 | RE | - |
testcase_11 | RE | - |
testcase_12 | RE | - |
testcase_13 | RE | - |
testcase_14 | RE | - |
testcase_15 | RE | - |
testcase_16 | RE | - |
testcase_17 | RE | - |
testcase_18 | AC | 4 ms
7,424 KB |
ソースコード
#include <bits/stdc++.h> using namespace std::literals::string_literals; using i64 = long long; using std::cout; using std::endl; using std::cin; template<typename T> std::vector<T> make_v(size_t a){return std::vector<T>(a);} template<typename T,typename... Ts> auto make_v(size_t a,Ts... ts){ return std::vector<decltype(make_v<T>(ts...))>(a,make_v<T>(ts...)); } template<typename Monoid> class segment_tree { using value_type = Monoid; using size_type = size_t; using binary_function = std::function<value_type(value_type, value_type)>; using checker = std::function<bool(value_type)>; const size_type size_; size_type height_; const value_type id; const binary_function bi_func; std::vector<value_type> data; private: const size_type get_height(const size_type& size) const { size_type height = 1; while(1 << height < size) height++; return height; } const size_type base_size() const { return 1 << height_; } void meld(const size_type& index) { data[index] = bi_func(data[index << 1 ^ 0], data[index << 1 ^ 1]); } public: segment_tree(const size_type& size, const binary_function& bi_func, const value_type& id) : size_(size), bi_func(bi_func), id(id) { height_ = get_height(size); data.assign(base_size() << 1, id); } value_type fold(size_type left, size_type right) { value_type l_value = id, r_value = id; for(left += base_size(), right += base_size(); left < right; left >>= 1, right >>= 1) { if(left & 1) l_value = bi_func(l_value, data[left++]); if(right & 1) r_value = bi_func(data[--right], r_value); } return bi_func(std::move(l_value), std::move(r_value)); } void update(size_type index, const value_type& value) { index += base_size(); data[index] = bi_func(data[index], value); while(index >>= 1) meld(index); } void change(size_type index, const value_type& value) { index += base_size(); data[index] = value; while(index >>= 1) meld(index); } const size_type search(const size_type & left, const checker & check) { value_type val = id; size_t base_size_ = base_size(); auto find = [&](auto&& find, size_type k, size_type l, size_type r) -> int { if(l + 1 == r) { val = bi_func(val, data[k]); return (check(val) ? k - base_size_ : -1); } const size_type mid = (l + r) >> 1; if(mid <= left) return find(find, k << 1 ^ 1, mid, r); if(left <= l and !check(bi_func(val, data[k]))) { val = bi_func(val, data[k]); return -1; } const int left_ret = find(find, k << 1 ^ 0, l, mid); if(left_ret == -1) return find(find, k << 1 ^ 1, mid, r); return left_ret; }; return find(find, 1, 0, base_size_); } value_type operator[](const size_type& index) const { return data[index + base_size()]; } const size_type size() const { return size_; } const bool empty() const { return data.empty(); } }; class Mo { // segment: [left, right) class Query { public: int left; int right; int id; Query(const int left, const int right, const int id) : left(left), right(right), id(id) {}; }; std::vector<Query> queries; const size_t N; size_t getSqrt(const size_t t) { size_t sqrt = 0; while(sqrt * sqrt <= t) sqrt++; return sqrt - 1; } void build(const size_t sqrtQ) { sort(begin(queries), end(queries), [&](Query a, Query b) { const int bucketA = a.left / sqrtQ, bucketB = b.left / sqrtQ; if(bucketA == bucketB) { if(bucketA & 1) return a.right > b.right; return a.right < b.right; } return bucketA < bucketB; }); } public: Mo(size_t n) : N(n) {} inline void addQuery(int left, int right) { queries.push_back(Query(left, right, (int)queries.size())); } inline int process() { static int left = 0, right = 0, index = 0; if(!index) build(getSqrt(queries.size())); Query q = queries[index++]; while(left > q.left) add(--left); while(left < q.left) del(left++); while(right < q.right) add(right++); while(right > q.right) del(--right); return q.id; } inline void add(int i); inline void del(int i); }; segment_tree<std::pair<i64, int>> seg(1e5, [](auto x, auto y) { return std::pair<i64, int>{x.first + y.first, x.second + y.second}; }, {0, 0}); std::vector<int> latte, malta, a; // :::impl::: inline void Mo::add(int i) { int k = malta[i]; seg.update(k, {a[i], 1}); }; inline void Mo::del(int i) { int k = malta[i]; seg.update(k, {-a[i], -1}); }; int main() { // input int n, q; scanf("%d%d", &n, &q); assert(1 <= n and n <= 1e5); assert(1 <= q and q <= 1e5); a.resize(n); for(int i = 0; i < n; i++) { scanf("%d", &a[i]); assert(-1e9 <= a[i] and a[i] <= 1e9); } std::vector<int> L(q), R(q); for(int i = 0; i < q; i++) { scanf("%d%d", &L[i], &R[i]); assert(1 <= L[i] and L[i] <= n); assert(1 <= R[i] and R[i] <= n); assert(L[i] <= R[i]); L[i]--; } // solve latte = a; malta.resize(n); sort(begin(latte), end(latte)); latte.erase(unique(begin(latte), end(latte)), end(latte)); for(int i = 0; i < n; i++) malta[i] = lower_bound(begin(latte), end(latte), a[i]) - begin(latte); Mo mo(n); for(int i = 0; i < q; i++) mo.addQuery(L[i], R[i]); std::vector<i64> ans(q, -1); std::vector<i64> cen(q, -1); while(q--) { int id = mo.process(); const int len = (R[id] - L[id]) >> 1; auto check = [len](std::pair<i64, int> p) { return p.second > len; }; const int center = seg.search(0, check); const i64 val = latte[center]; auto left = seg.fold(0, center); auto right = seg.fold(center, n); i64 A = val * left.second - left.first; i64 B = right.first - val * right.second; ans[id] = A + B; } for(int i = 0; i < ans.size(); i++) { printf("%lld\n", ans[i]); } return 0; }