結果
問題 | No.2204 Palindrome Splitting (No Rearrangement ver.) |
ユーザー |
|
提出日時 | 2023-02-03 21:44:25 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 42 ms / 2,000 ms |
コード長 | 4,318 bytes |
コンパイル時間 | 1,706 ms |
コンパイル使用メモリ | 197,456 KB |
最終ジャッジ日時 | 2025-02-10 09:00:40 |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 33 |
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;}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 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);}} io_setup;const int inf = (1 << 30) - 1;const ll INF = (1LL << 60) - 1;// const int MOD = 1000000007;const int MOD = 998244353;struct Union_Find_Tree {vector<int> data;const int n;int cnt;Union_Find_Tree(int n) : data(n, -1), n(n), cnt(n) {}int root(int x) {if (data[x] < 0) return x;return data[x] = root(data[x]);}int operator[](int i) { return root(i); }bool unite(int x, int y) {x = root(x), y = root(y);if (x == y) return false;if (data[x] > data[y]) swap(x, y);data[x] += data[y], data[y] = x;cnt--;return true;}int size(int x) { return -data[root(x)]; }int count() { return cnt; };bool same(int x, int y) { return root(x) == root(y); }void clear() {cnt = n;fill(begin(data), end(data), -1);}};int main() {string S;cin >> S;int N = sz(S);vector<int> dp(N + 1, -inf);dp[0] = inf;vector<bool> ok(N, true), ok2(N - 1, true);rep(i, N) {rep(j, i + 1) {if (ok[j]) {if (2 * j - i < 0 || S[2 * j - i] != S[i]) ok[j] = false;}if (ok[j]) chmax(dp[i + 1], min(dp[2 * j - i], 2 * (i - j) + 1));}rep(j, i) {if (ok2[j]) {if (2 * j - i + 1 < 0 || S[2 * j - i + 1] != S[i]) ok2[j] = false;}if (ok2[j]) chmax(dp[i + 1], min(dp[2 * j - i + 1], 2 * (i - j)));}}cout << dp[N] << '\n';}