結果
問題 | No.2210 equence Squence Seuence |
ユーザー | t98slider |
提出日時 | 2023-02-10 21:41:03 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 78 ms / 2,000 ms |
コード長 | 7,873 bytes |
コンパイル時間 | 2,629 ms |
コンパイル使用メモリ | 193,580 KB |
実行使用メモリ | 9,936 KB |
最終ジャッジ日時 | 2024-07-07 15:52:06 |
合計ジャッジ時間 | 5,017 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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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
6,940 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 17 ms
6,944 KB |
testcase_04 | AC | 19 ms
6,944 KB |
testcase_05 | AC | 27 ms
6,940 KB |
testcase_06 | AC | 24 ms
6,940 KB |
testcase_07 | AC | 61 ms
8,484 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,944 KB |
testcase_10 | AC | 2 ms
6,940 KB |
testcase_11 | AC | 2 ms
6,940 KB |
testcase_12 | AC | 2 ms
6,944 KB |
testcase_13 | AC | 78 ms
9,812 KB |
testcase_14 | AC | 77 ms
9,808 KB |
testcase_15 | AC | 78 ms
9,816 KB |
testcase_16 | AC | 78 ms
9,680 KB |
testcase_17 | AC | 78 ms
9,936 KB |
testcase_18 | AC | 2 ms
6,940 KB |
testcase_19 | AC | 2 ms
6,944 KB |
testcase_20 | AC | 2 ms
6,940 KB |
testcase_21 | AC | 2 ms
6,944 KB |
testcase_22 | AC | 2 ms
6,944 KB |
testcase_23 | AC | 36 ms
6,940 KB |
testcase_24 | AC | 27 ms
6,940 KB |
testcase_25 | AC | 32 ms
6,940 KB |
testcase_26 | AC | 42 ms
7,680 KB |
testcase_27 | AC | 13 ms
6,940 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; namespace internal { std::vector<int> sa_naive(const std::vector<int>& s) { int n = int(s.size()); std::vector<int> sa(n); std::iota(sa.begin(), sa.end(), 0); std::sort(sa.begin(), sa.end(), [&](int l, int r) { if (l == r) return false; while (l < n && r < n) { if (s[l] != s[r]) return s[l] < s[r]; l++; r++; } return l == n; }); return sa; } std::vector<int> sa_doubling(const std::vector<int>& s) { int n = int(s.size()); std::vector<int> sa(n), rnk = s, tmp(n); std::iota(sa.begin(), sa.end(), 0); for (int k = 1; k < n; k *= 2) { auto cmp = [&](int x, int y) { if (rnk[x] != rnk[y]) return rnk[x] < rnk[y]; int rx = x + k < n ? rnk[x + k] : -1; int ry = y + k < n ? rnk[y + k] : -1; return rx < ry; }; std::sort(sa.begin(), sa.end(), cmp); tmp[sa[0]] = 0; for (int i = 1; i < n; i++) { tmp[sa[i]] = tmp[sa[i - 1]] + (cmp(sa[i - 1], sa[i]) ? 1 : 0); } std::swap(tmp, rnk); } return sa; } template <int THRESHOLD_NAIVE = 10, int THRESHOLD_DOUBLING = 40> std::vector<int> sa_is(const std::vector<int>& s, int upper) { int n = int(s.size()); if (n == 0) return {}; if (n == 1) return {0}; if (n == 2) { if (s[0] < s[1]) { return {0, 1}; } else { return {1, 0}; } } if (n < THRESHOLD_NAIVE) { return sa_naive(s); } if (n < THRESHOLD_DOUBLING) { return sa_doubling(s); } std::vector<int> sa(n); std::vector<bool> ls(n); for (int i = n - 2; i >= 0; i--) { ls[i] = (s[i] == s[i + 1]) ? ls[i + 1] : (s[i] < s[i + 1]); } std::vector<int> sum_l(upper + 1), sum_s(upper + 1); for (int i = 0; i < n; i++) { if (!ls[i]) { sum_s[s[i]]++; } else { sum_l[s[i] + 1]++; } } for (int i = 0; i <= upper; i++) { sum_s[i] += sum_l[i]; if (i < upper) sum_l[i + 1] += sum_s[i]; } auto induce = [&](const std::vector<int>& lms) { std::fill(sa.begin(), sa.end(), -1); std::vector<int> buf(upper + 1); std::copy(sum_s.begin(), sum_s.end(), buf.begin()); for (auto d : lms) { if (d == n) continue; sa[buf[s[d]]++] = d; } std::copy(sum_l.begin(), sum_l.end(), buf.begin()); sa[buf[s[n - 1]]++] = n - 1; for (int i = 0; i < n; i++) { int v = sa[i]; if (v >= 1 && !ls[v - 1]) { sa[buf[s[v - 1]]++] = v - 1; } } std::copy(sum_l.begin(), sum_l.end(), buf.begin()); for (int i = n - 1; i >= 0; i--) { int v = sa[i]; if (v >= 1 && ls[v - 1]) { sa[--buf[s[v - 1] + 1]] = v - 1; } } }; std::vector<int> lms_map(n + 1, -1); int m = 0; for (int i = 1; i < n; i++) { if (!ls[i - 1] && ls[i]) { lms_map[i] = m++; } } std::vector<int> lms; lms.reserve(m); for (int i = 1; i < n; i++) { if (!ls[i - 1] && ls[i]) { lms.push_back(i); } } induce(lms); if (m) { std::vector<int> sorted_lms; sorted_lms.reserve(m); for (int v : sa) { if (lms_map[v] != -1) sorted_lms.push_back(v); } std::vector<int> rec_s(m); int rec_upper = 0; rec_s[lms_map[sorted_lms[0]]] = 0; for (int i = 1; i < m; i++) { int l = sorted_lms[i - 1], r = sorted_lms[i]; int end_l = (lms_map[l] + 1 < m) ? lms[lms_map[l] + 1] : n; int end_r = (lms_map[r] + 1 < m) ? lms[lms_map[r] + 1] : n; bool same = true; if (end_l - l != end_r - r) { same = false; } else { while (l < end_l) { if (s[l] != s[r]) { break; } l++; r++; } if (l == n || s[l] != s[r]) same = false; } if (!same) rec_upper++; rec_s[lms_map[sorted_lms[i]]] = rec_upper; } auto rec_sa = sa_is(rec_s, rec_upper); for (int i = 0; i < m; i++) { sorted_lms[i] = lms[rec_sa[i]]; } induce(sorted_lms); } return sa; } } // namespace internal std::vector<int> suffix_array(const std::vector<int>& s, int upper) { assert(0 <= upper); for (int d : s) { assert(0 <= d && d <= upper); } auto sa = internal::sa_is(s, upper); return sa; } template <class T> std::vector<int> suffix_array(const std::vector<T>& s) { int n = int(s.size()); std::vector<int> idx(n); iota(idx.begin(), idx.end(), 0); sort(idx.begin(), idx.end(), [&](int l, int r) { return s[l] < s[r]; }); std::vector<int> s2(n); int now = 0; for (int i = 0; i < n; i++) { if (i && s[idx[i - 1]] != s[idx[i]]) now++; s2[idx[i]] = now; } return internal::sa_is(s2, now); } std::vector<int> suffix_array(const std::string& s) { int n = int(s.size()); std::vector<int> s2(n); for (int i = 0; i < n; i++) { s2[i] = s[i]; } return internal::sa_is(s2, 255); } template <class T> std::vector<int> lcp_array(const std::vector<T>& s, const std::vector<int>& sa) { int n = int(s.size()); assert(n >= 1); std::vector<int> rnk(n); for (int i = 0; i < n; i++) { rnk[sa[i]] = i; } std::vector<int> lcp(n - 1); int h = 0; for (int i = 0; i < n; i++) { if (h > 0) h--; if (rnk[i] == 0) continue; int j = sa[rnk[i] - 1]; for (; j + h < n && i + h < n; h++) { if (s[j + h] != s[i + h]) break; } lcp[rnk[i] - 1] = h; } return lcp; } std::vector<int> lcp_array(const std::string& s, const std::vector<int>& sa) { int n = int(s.size()); std::vector<int> s2(n); for (int i = 0; i < n; i++) { s2[i] = s[i]; } return lcp_array(s2, sa); } template <class T> std::vector<int> z_algorithm(const std::vector<T>& s) { int n = int(s.size()); if (n == 0) return {}; std::vector<int> z(n); z[0] = 0; for (int i = 1, j = 0; i < n; i++) { int& k = z[i]; k = (j + z[j] <= i) ? 0 : std::min(j + z[j] - i, z[i - j]); while (i + k < n && s[k] == s[i + k]) k++; if (j + z[j] < i + z[i]) j = i; } z[0] = n; return z; } std::vector<int> z_algorithm(const std::string& s) { int n = int(s.size()); std::vector<int> s2(n); for (int i = 0; i < n; i++) { s2[i] = s[i]; } return z_algorithm(s2); } int main(){ ios::sync_with_stdio(false); cin.tie(0); int n, k; cin >> n >> k; vector<int> x(n); for(auto &v:x)cin >> v; vector<int> sa = suffix_array(x, n + 1); //vector<int> lcpa = lcp_array(x, sa); vector<bool> used(n + 1), used2(n + 1); vector<int> pos, pos2; for(auto &&id:sa){ if(used[id + 1]){ pos.push_back(id); }else{ pos2.push_back(id); } used[id] = true; } sort(pos.begin(), pos.end()); sort(pos2.rbegin(), pos2.rend()); auto answer = [&](int p){ vector<int> ans; ans.reserve(n - 1); for(int i = 0; i < n; i++){ if(i == p)continue; ans.push_back(x[i]); } for(int i = 0; i + 1 < n; i++){ cout << ans[i] << (i + 2 == n ? '\n': ' '); } exit(0); }; k--; if(k < pos.size())answer(pos[k]); else answer(pos2[k - pos.size()]); }