結果
問題 | No.599 回文かい |
ユーザー | はまやんはまやん |
提出日時 | 2019-03-04 21:44:44 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 439 ms / 4,000 ms |
コード長 | 3,932 bytes |
コンパイル時間 | 1,679 ms |
コンパイル使用メモリ | 172,028 KB |
実行使用メモリ | 224,512 KB |
最終ジャッジ日時 | 2024-06-23 14:01:30 |
合計ジャッジ時間 | 3,678 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
(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
6,812 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 2 ms
6,944 KB |
testcase_05 | AC | 3 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 2 ms
6,944 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,940 KB |
testcase_10 | AC | 3 ms
6,944 KB |
testcase_11 | AC | 2 ms
6,940 KB |
testcase_12 | AC | 3 ms
6,940 KB |
testcase_13 | AC | 4 ms
6,940 KB |
testcase_14 | AC | 236 ms
181,120 KB |
testcase_15 | AC | 16 ms
12,928 KB |
testcase_16 | AC | 399 ms
197,120 KB |
testcase_17 | AC | 439 ms
224,512 KB |
testcase_18 | AC | 2 ms
6,940 KB |
testcase_19 | AC | 2 ms
6,948 KB |
testcase_20 | AC | 2 ms
6,940 KB |
evil_0.txt | AC | 100 ms
77,824 KB |
ソースコード
#include<bits/stdc++.h> #define rep(i,a,b) for(int i=a;i<b;i++) #define rrep(i,a,b) for(int i=a;i>=b;i--) #define fore(i,a) for(auto &i:a) #define all(x) (x).begin(),(x).end() //#pragma GCC optimize ("-O3") using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); } typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60; template<class T>bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; } template<class T>bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; } //--------------------------------------------------------------------------------------------------- template<int MOD> struct ModInt { static const int Mod = MOD; unsigned x; ModInt() : x(0) { } ModInt(signed sig) { x = sig < 0 ? sig % MOD + MOD : sig % MOD; } ModInt(signed long long sig) { x = sig < 0 ? sig % MOD + MOD : sig % MOD; } int get() const { return (int)x; } ModInt &operator+=(ModInt that) { if ((x += that.x) >= MOD) x -= MOD; return *this; } ModInt &operator-=(ModInt that) { if ((x += MOD - that.x) >= MOD) x -= MOD; return *this; } ModInt &operator*=(ModInt that) { x = (unsigned long long)x * that.x % MOD; return *this; } ModInt &operator/=(ModInt that) { return *this *= that.inverse(); } ModInt operator+(ModInt that) const { return ModInt(*this) += that; } ModInt operator-(ModInt that) const { return ModInt(*this) -= that; } ModInt operator*(ModInt that) const { return ModInt(*this) *= that; } ModInt operator/(ModInt that) const { return ModInt(*this) /= that; } ModInt inverse() const { long long a = x, b = MOD, u = 1, v = 0; while (b) { long long t = a / b; a -= t * b; std::swap(a, b); u -= t * v; std::swap(u, v); } return ModInt(u); } bool operator==(ModInt that) const { return x == that.x; } bool operator!=(ModInt that) const { return x != that.x; } ModInt operator-() const { ModInt t; t.x = x == 0 ? 0 : Mod - x; return t; } }; template<int MOD> ostream& operator<<(ostream& st, const ModInt<MOD> a) { st << a.get(); return st; }; template<int MOD> ModInt<MOD> operator^(ModInt<MOD> a, unsigned long long k) { ModInt<MOD> r = 1; while (k) { if (k & 1) r *= a; a *= a; k >>= 1; } return r; } typedef ModInt<1000000007> mint; vector<int> Zalgorithm(string S) { int N = S.length(); vector<int> res(N); res[0] = N; int i = 1, j = 0; while (i < N) { while (i + j < N and S[j] == S[i + j]) j++; res[i] = j; if (j == 0) { i++; continue; } int k = 1; while (i + k < N and k + res[k] < j) res[i + k] = res[k], k++; i += k; j -= k; } return res; } /*--------------------------------------------------------------------------------------------------- ∧_∧ ∧_∧ (´<_` ) Welcome to My Coding Space! ( ´_ゝ`) / ⌒i / \ | | / / ̄ ̄ ̄ ̄/ | __(__ニつ/ _/ .| .|____ \/____/ (u ⊃ ---------------------------------------------------------------------------------------------------*/ string S; int N; //--------------------------------------------------------------------------------------------------- mint memo[10101]; int vis[10101]; mint solve(int L, int R) { if (R < L) return 1; if (0 < vis[L]) return memo[L]; vis[L] = 1; int n = R - L + 1; string s = S.substr(L, n); auto z = Zalgorithm(s + "#" + s); mint res = 1; rep(d, 1, n/2 + 1) if(d == z[n*2 + 1 - d]) res += solve(L + d, R - d); return memo[L] = res; } //--------------------------------------------------------------------------------------------------- void _main() { cin >> S; N = S.length(); cout << solve(0, N - 1) << endl; }