結果
問題 | No.2606 Mirror Relay |
ユーザー | tokusakurai |
提出日時 | 2024-01-12 22:53:51 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 28 ms / 2,000 ms |
コード長 | 6,512 bytes |
コンパイル時間 | 2,280 ms |
コンパイル使用メモリ | 209,856 KB |
実行使用メモリ | 34,356 KB |
最終ジャッジ日時 | 2024-09-27 23:41:16 |
合計ジャッジ時間 | 4,446 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
6,812 KB |
testcase_01 | AC | 2 ms
6,812 KB |
testcase_02 | AC | 1 ms
6,812 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 2 ms
6,944 KB |
testcase_05 | AC | 2 ms
6,944 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 2 ms
6,940 KB |
testcase_08 | AC | 2 ms
6,944 KB |
testcase_09 | AC | 2 ms
6,940 KB |
testcase_10 | AC | 2 ms
6,940 KB |
testcase_11 | AC | 2 ms
6,944 KB |
testcase_12 | AC | 2 ms
6,940 KB |
testcase_13 | AC | 2 ms
6,944 KB |
testcase_14 | AC | 2 ms
6,940 KB |
testcase_15 | AC | 2 ms
6,940 KB |
testcase_16 | AC | 2 ms
6,940 KB |
testcase_17 | AC | 2 ms
6,940 KB |
testcase_18 | AC | 2 ms
6,940 KB |
testcase_19 | AC | 2 ms
6,944 KB |
testcase_20 | AC | 2 ms
6,944 KB |
testcase_21 | AC | 2 ms
6,944 KB |
testcase_22 | AC | 2 ms
6,940 KB |
testcase_23 | AC | 2 ms
6,944 KB |
testcase_24 | AC | 2 ms
6,940 KB |
testcase_25 | AC | 2 ms
6,944 KB |
testcase_26 | AC | 2 ms
6,940 KB |
testcase_27 | AC | 2 ms
6,944 KB |
testcase_28 | AC | 2 ms
6,940 KB |
testcase_29 | AC | 2 ms
6,940 KB |
testcase_30 | AC | 2 ms
6,940 KB |
testcase_31 | AC | 2 ms
6,940 KB |
testcase_32 | AC | 2 ms
6,944 KB |
testcase_33 | AC | 2 ms
6,940 KB |
testcase_34 | AC | 2 ms
6,944 KB |
testcase_35 | AC | 2 ms
6,944 KB |
testcase_36 | AC | 2 ms
6,944 KB |
testcase_37 | AC | 2 ms
6,940 KB |
testcase_38 | AC | 2 ms
6,940 KB |
testcase_39 | AC | 7 ms
6,944 KB |
testcase_40 | AC | 7 ms
6,940 KB |
testcase_41 | AC | 7 ms
6,944 KB |
testcase_42 | AC | 7 ms
6,944 KB |
testcase_43 | AC | 7 ms
6,944 KB |
testcase_44 | AC | 7 ms
6,940 KB |
testcase_45 | AC | 7 ms
6,940 KB |
testcase_46 | AC | 7 ms
6,940 KB |
testcase_47 | AC | 7 ms
6,944 KB |
testcase_48 | AC | 7 ms
6,944 KB |
testcase_49 | AC | 14 ms
12,220 KB |
testcase_50 | AC | 14 ms
13,328 KB |
testcase_51 | AC | 15 ms
13,308 KB |
testcase_52 | AC | 14 ms
12,740 KB |
testcase_53 | AC | 14 ms
12,324 KB |
testcase_54 | AC | 14 ms
12,940 KB |
testcase_55 | AC | 18 ms
19,252 KB |
testcase_56 | AC | 14 ms
11,936 KB |
testcase_57 | AC | 13 ms
12,820 KB |
testcase_58 | AC | 18 ms
19,368 KB |
testcase_59 | AC | 7 ms
6,944 KB |
testcase_60 | AC | 7 ms
6,944 KB |
testcase_61 | AC | 7 ms
6,940 KB |
testcase_62 | AC | 7 ms
6,944 KB |
testcase_63 | AC | 7 ms
6,940 KB |
testcase_64 | AC | 7 ms
6,940 KB |
testcase_65 | AC | 7 ms
6,940 KB |
testcase_66 | AC | 7 ms
6,944 KB |
testcase_67 | AC | 7 ms
6,940 KB |
testcase_68 | AC | 7 ms
6,944 KB |
testcase_69 | AC | 28 ms
34,356 KB |
testcase_70 | AC | 2 ms
6,948 KB |
testcase_71 | AC | 2 ms
6,944 KB |
testcase_72 | AC | 2 ms
6,940 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i, n) for (int i = 0; i < (n); i++) #define per(i, n) for (int i = (n)-1; i >= 0; i--) #define rep2(i, l, r) for (int i = (l); i < (r); i++) #define per2(i, l, r) for (int i = (r)-1; i >= (l); i--) #define each(e, v) for (auto &e : v) #define MM << " " << #define pb push_back #define eb emplace_back #define all(x) begin(x), end(x) #define rall(x) rbegin(x), rend(x) #define sz(x) (int)x.size() using ll = long long; using pii = pair<int, int>; using pil = pair<int, ll>; using pli = pair<ll, int>; using pll = pair<ll, ll>; template <typename T> using minheap = priority_queue<T, vector<T>, greater<T>>; template <typename T> using maxheap = priority_queue<T>; template <typename T> bool chmax(T &x, const T &y) { return (x < y) ? (x = y, true) : false; } template <typename T> bool chmin(T &x, const T &y) { return (x > y) ? (x = y, true) : false; } template <typename T> int flg(T x, int i) { return (x >> i) & 1; } int pct(int x) { return __builtin_popcount(x); } int pct(ll x) { return __builtin_popcountll(x); } int topbit(int x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); } int topbit(ll x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); } int botbit(int x) { return (x == 0 ? -1 : __builtin_ctz(x)); } int botbit(ll x) { return (x == 0 ? -1 : __builtin_ctzll(x)); } template <typename T> void print(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' '); if (v.empty()) cout << '\n'; } template <typename T> void printn(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << '\n'; } template <typename T> int lb(const vector<T> &v, T x) { return lower_bound(begin(v), end(v), x) - begin(v); } template <typename T> int ub(const vector<T> &v, T x) { return upper_bound(begin(v), end(v), x) - begin(v); } template <typename T> void rearrange(vector<T> &v) { sort(begin(v), end(v)); v.erase(unique(begin(v), end(v)), end(v)); } template <typename T> vector<int> id_sort(const vector<T> &v, bool greater = false) { int n = v.size(); vector<int> ret(n); iota(begin(ret), end(ret), 0); sort(begin(ret), end(ret), [&](int i, int j) { return greater ? v[i] > v[j] : v[i] < v[j]; }); return ret; } template <typename T> void reorder(vector<T> &a, const vector<int> &ord) { int n = a.size(); vector<T> b(n); for (int i = 0; i < n; i++) b[i] = a[ord[i]]; swap(a, b); } template <typename T> T floor(T x, T y) { assert(y != 0); if (y < 0) x = -x, y = -y; return (x >= 0 ? x / y : (x - y + 1) / y); } template <typename T> T ceil(T x, T y) { assert(y != 0); if (y < 0) x = -x, y = -y; return (x >= 0 ? (x + y - 1) / y : x / y); } template <typename S, typename T> pair<S, T> operator+(const pair<S, T> &p, const pair<S, T> &q) { return make_pair(p.first + q.first, p.second + q.second); } template <typename S, typename T> pair<S, T> operator-(const pair<S, T> &p, const pair<S, T> &q) { return make_pair(p.first - q.first, p.second - q.second); } template <typename S, typename T> istream &operator>>(istream &is, pair<S, T> &p) { S a; T b; is >> a >> b; p = make_pair(a, b); return is; } template <typename S, typename T> ostream &operator<<(ostream &os, const pair<S, T> &p) { return os << p.first << ' ' << p.second; } struct io_setup { io_setup() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout << fixed << setprecision(15); cerr << fixed << setprecision(15); } } io_setup; constexpr int inf = (1 << 30) - 1; constexpr ll INF = (1LL << 60) - 1; // constexpr int MOD = 1000000007; constexpr int MOD = 998244353; template <int char_size, char base> struct Palindrome_Tree { struct Node { array<int, char_size> next; int len, count, suffix_link; Node(int len, int suffix_link) : len(len), count(0), suffix_link(suffix_link) { fill(begin(next), end(next), -1); } }; vector<Node> nodes; string s; int n; vector<int> longest_palindromes; // i 文字目を末尾とする最長回文の index を格納 Palindrome_Tree() : n(0) { nodes.emplace_back(-1, -1); // 奇数長の空回文 nodes.emplace_back(0, 0); // 偶数長の空回文 } Palindrome_Tree(string s) : Palindrome_Tree() { for (char c : s) push_back(c); build_frequency(); } // 回文の種類数 int count() { return (int)nodes.size() - 2; } // r-1 文字目を末尾とする palindrome に c を追加したときの suffix_link int suffix_palindrome(int palindrome, char c, int r) { while (palindrome != -1) { const Node &node = nodes[palindrome]; if (node.len < r && s[r - 1 - node.len] == c) return palindrome; palindrome = node.suffix_link; } return -1; } void push_back(char c) { s.push_back(c); n++; int current_palindrome = (n == 1 ? 0 : longest_palindromes.back()); int p = suffix_palindrome(current_palindrome, c, n - 1); if (nodes[p].next[c - base] == -1) { nodes[p].next[c - base] = (int)nodes.size(); int q = suffix_palindrome(nodes[p].suffix_link, c, n - 1); if (q != -1) { nodes.emplace_back(nodes[p].len + 2, nodes[q].next[c - base]); } else { nodes.emplace_back(1, 1); } } int palindrome = nodes[p].next[c - base]; nodes[palindrome].count++; longest_palindromes.push_back(palindrome); } void build_frequency() { for (int i = (int)nodes.size() - 1; i > 0; i--) { int suffix = nodes[i].suffix_link; nodes[suffix].count += nodes[i].count; } } void solve() { int L = sz(nodes); vector<ll> dp(L, 0); rep(i, L) { auto e = nodes[i]; // cout << i MM e.len MM e.count << endl; if (e.len > 0) dp[i] += 1LL * e.len * e.count; if (e.suffix_link >= 0) dp[i] += dp[e.suffix_link]; } ll ans = 0; rep(i, L) chmax(ans, dp[i]); cout << ans << '\n'; } }; void solve() { string S; cin >> S; Palindrome_Tree<26, 'a'> P(S); // P.build_frequency(); P.solve(); } int main() { int T = 1; // cin >> T; while (T--) solve(); }