結果
問題 | No.1332 Range Nearest Query |
ユーザー | outline |
提出日時 | 2021-01-08 22:23:51 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 6,972 bytes |
コンパイル時間 | 1,751 ms |
コンパイル使用メモリ | 148,608 KB |
実行使用メモリ | 11,008 KB |
最終ジャッジ日時 | 2024-11-16 13:07:41 |
合計ジャッジ時間 | 15,229 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
(要ログイン)
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
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | AC | 150 ms
10,880 KB |
testcase_27 | AC | 190 ms
10,880 KB |
testcase_28 | AC | 81 ms
5,248 KB |
testcase_29 | AC | 84 ms
5,248 KB |
testcase_30 | AC | 84 ms
5,248 KB |
testcase_31 | AC | 77 ms
5,248 KB |
testcase_32 | AC | 88 ms
5,248 KB |
testcase_33 | AC | 84 ms
5,248 KB |
testcase_34 | AC | 79 ms
5,248 KB |
testcase_35 | AC | 80 ms
5,248 KB |
testcase_36 | AC | 80 ms
5,248 KB |
testcase_37 | AC | 83 ms
5,248 KB |
testcase_38 | WA | - |
testcase_39 | WA | - |
testcase_40 | WA | - |
testcase_41 | WA | - |
testcase_42 | WA | - |
testcase_43 | WA | - |
testcase_44 | WA | - |
testcase_45 | WA | - |
testcase_46 | WA | - |
testcase_47 | WA | - |
ソースコード
#include <iostream> #include <vector> #include <algorithm> #include <cmath> #include <queue> #include <string> #include <map> #include <set> #include <stack> #include <tuple> #include <deque> #include <array> #include <numeric> #include <bitset> #include <iomanip> #include <cassert> #include <chrono> #include <random> #include <limits> #include <iterator> #include <functional> #include <sstream> #include <fstream> #include <complex> #include <cstring> #include <unordered_map> #include <unordered_set> using namespace std; using ll = long long; using P = pair<int, int>; constexpr int INF = 1001001001; constexpr int mod = 1000000007; // constexpr int mod = 998244353; template<class T> inline bool chmax(T& x, T y){ if(x < y){ x = y; return true; } return false; } template<class T> inline bool chmin(T& x, T y){ if(x > y){ x = y; return true; } return false; } struct SuccinctIndexableDictionary { size_t length, blocks; vector<unsigned> bit, sum; SuccinctIndexableDictionary() = default; SuccinctIndexableDictionary(size_t length) : length(length), blocks((length + 31) >> 5) { bit.assign(blocks, 0U); sum.assign(blocks, 0U); } void set(int k){ bit[k >> 5] |= 1U << (k & 31); } void build(){ sum[0] = 0U; for(int i = 1; i < blocks; ++i){ sum[i] = sum[i - 1] + __builtin_popcount(bit[i - 1]); } } bool operator[](int k){ return (bool((bit[k >> 5] >> (k & 31)) & 1)); } int rank(int k){ return (sum[k >> 5] + __builtin_popcount(bit[k >> 5] & ((1U << (k & 31)) - 1))); } // f : bit flag int rank(bool f, int k){ return (f ? rank(k) : k - rank(k)); } }; template<typename T, int MAXLOG> struct WaveletMatrix { size_t length; SuccinctIndexableDictionary matrix[MAXLOG]; int mid[MAXLOG]; WaveletMatrix() = default; WaveletMatrix(vector<T> v) : length(v.size()) { vector<T> zero(length), one(length); for(int level = MAXLOG - 1; level >= 0; --level){ matrix[level] = SuccinctIndexableDictionary(length + 1); int left = 0, right = 0; for(int i = 0; i < length; ++i){ if(((v[i] >> level) & 1)){ matrix[level].set(i); one[right++] = v[i]; } else{ zero[left++] = v[i]; } } mid[level] = left; matrix[level].build(); v.swap(zero); for(int i = 0; i < right; ++i){ v[left + i] = one[i]; } } } pair<int, int> succ(bool f, int l, int r, int level){ return {matrix[level].rank(f, l) + mid[level] * f, matrix[level].rank(f, r) + mid[level] * f}; } T access(int k){ T ret = 0; for(int level = MAXLOG - 1; level >= 0; --level){ bool f = matrix[level][k]; if(f) ret |= T(1) << level; k = matrix[level].rank(f, k) + mid[level] * f; } return ret; } T operator[](const int& k){ return access(k); } int rank(const T& x, int r){ int l = 0; for(int level = MAXLOG - 1; level >= 0; --level){ tie(l, r) = succ((x >> level) & 1, l, r, level); } return r - l; } T kth_smallest(int l, int r, int k){ assert(0 <= k && k < r - l); T ret = 0; for(int level = MAXLOG - 1; level >= 0; --level){ int cnt = matrix[level].rank(false, r) - matrix[level].rank(false, l); bool f = cnt <= k; if(f){ ret |= T(1) << level; k -= cnt; } tie(l, r) = succ(f, l, r, level); } return ret; } T kth_largest(int l, int r, int k){ return kth_smallest(l, r, r - l - k - 1); } int range_freq(int l, int r, T upper){ int ret = 0; for(int level = MAXLOG - 1; level >= 0; --level){ bool f = ((upper >> level) & 1); if(f) ret += matrix[level].rank(false, r) - matrix[level].rank(false, l); tie(l, r) = succ(f, l, r, level); } return ret; } int range_freq(int l, int r, T lower, T upper){ return range_freq(l, r, upper) - range_freq(l, r, lower); } T prev_value(int l, int r, T upper){ int cnt = range_freq(l, r, upper); return cnt == 0 ? T(-1) : kth_smallest(l, r, cnt - 1); } T next_value(int l, int r, T lower){ int cnt = range_freq(l, r, lower); return cnt == r - l ? T(-1) : kth_smallest(l, r, cnt); } }; template<typename T, int MAXLOG> struct CompressedWaveletMatrix { WaveletMatrix<int, MAXLOG> mat; vector<T> ys; CompressedWaveletMatrix(const vector<T>& v) : ys(v) { sort(begin(ys), end(ys)); ys.erase(unique(ys.begin(), ys.end()), ys.end()); vector<int> t(v.size()); for(int i = 0; i < (int)v.size(); ++i) t[i] = get(v[i]); mat = WaveletMatrix<int, MAXLOG>(t); } inline int get(const T& x){ return lower_bound(begin(ys), end(ys), x) - begin(ys); } T access(int k){ return ys[mat.access(k)]; } T operator[](const int& k){ return access(k); } int rank(const T& x, int r){ auto pos = get(x); if(pos == ys.size() || ys[pos] != x) return 0; return mat.rank(pos, r); } T kth_smallest(int l, int r, int k){ return ys[mat.kth_smallest(l, r, k)]; } T kth_largest(int l, int r, int k){ return ys[mat.kth_largest(l, r, k)]; } int range_freq(int l, int r, T upper){ return mat.range_freq(l, r, get(upper)); } int range_freq(int l, int r, T lower, T upper){ return mat.range_freq(l, r, get(lower), get(upper)); } T prev_value(int l, int r, T upper){ auto ret = mat.prev_value(l, r, get(upper)); return ret == -1 ? T(-1) : ys[ret]; } T next_value(int l, int r, T lower){ auto ret = mat.next_value(l, r, get(lower)); return ret == -1 ? T(-1) : ys[ret]; } }; int main(){ ios::sync_with_stdio(false); cin.tie(nullptr); int N, Q, l, r, x; cin >> N; vector<int> X(N + 2); for(int i = 0; i < N; ++i) cin >> X[i]; X[N] = -INF, X[N + 1] = INF * 2; CompressedWaveletMatrix<int, 10> cwm(X); cin >> Q; for(int q = 0; q < Q; ++q){ cin >> l >> r >> x; --l; if(cwm.range_freq(l, r, x, x + 1)){ cout << 0 << '\n'; } else{ int prv = cwm.prev_value(l, r, x); int nxt = cwm.next_value(l, r, x); int ans = INF; if(prv != -1) chmin(ans, x - prv); if(nxt != -1) chmin(ans, nxt - x); cout << ans << '\n'; } } return 0; }