結果
問題 | No.599 回文かい |
ユーザー | unagiunag |
提出日時 | 2019-09-28 17:34:29 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,950 bytes |
コンパイル時間 | 1,019 ms |
コンパイル使用メモリ | 102,524 KB |
実行使用メモリ | 6,948 KB |
最終ジャッジ日時 | 2024-10-02 13:14:30 |
合計ジャッジ時間 | 1,921 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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
6,820 KB |
testcase_02 | AC | 2 ms
6,820 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 | - |
evil_0.txt | WA | - |
ソースコード
#include <cassert> #include <cstdio> #include <cmath> #include <iostream> #include <iomanip> #include <sstream> #include <vector> #include <set> #include <map> #include <queue> #include <numeric> #include <algorithm> using namespace std; using lint = long long; constexpr int MOD = 1000000007, INF = 1010101010; constexpr lint LINF = 1LL << 60; template <class T> ostream &operator<<(ostream &os, const vector<T> &vec) { for (const auto &e : vec) os << e << (&e == &vec.back() ? "" : " "); return os; } #ifdef _DEBUG template <class T> void dump(const char* str, T &&h) { cerr << str << " = " << h << "\n"; }; template <class Head, class... Tail> void dump(const char* str, Head &&h, Tail &&... t) { while (*str != ',') cerr << *str++; cerr << " = " << h << "\n"; dump(str + (*(str + 1) == ' ' ? 2 : 1), t...); } #define DMP(...) dump(#__VA_ARGS__, __VA_ARGS__) #else #define DMP(...) ((void)0) #endif template<int Modulo> struct Mint { lint val; constexpr Mint(lint v = 0) noexcept : val(v % Modulo) { if (val < 0) v += Modulo; } constexpr Mint& operator += (const Mint &r) noexcept { val += r.val; if (val >= Modulo) val -= Modulo; return *this; } constexpr Mint& operator -= (const Mint &r) noexcept { val -= r.val; if (val < 0) val += Modulo; return *this; } constexpr Mint& operator *= (const Mint &r) noexcept { val = val * r.val % Modulo; return *this; } constexpr Mint& operator /= (const Mint &r) noexcept { lint a = r.val, b = Modulo, u = 1, v = 0; while (b) { lint t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v); } val = val * u % Modulo; if (val < 0) val += Modulo; return *this; } constexpr Mint operator + (const Mint &r) const noexcept { return Mint(*this) += r; } constexpr Mint operator - (const Mint &r) const noexcept { return Mint(*this) -= r; } constexpr Mint operator * (const Mint &r) const noexcept { return Mint(*this) *= r; } constexpr Mint operator / (const Mint &r) const noexcept { return Mint(*this) /= r; } constexpr int getmod() { return Modulo; } constexpr Mint operator - () const noexcept { return val ? Modulo - val : 0; } constexpr bool operator == (const Mint &r) const noexcept { return val == r.val; } constexpr bool operator != (const Mint &r) const noexcept { return val != r.val; } friend ostream &operator << (ostream &os, const Mint<Modulo> &x) noexcept { return os << x.val; } friend istream &operator >> (istream &is, Mint<Modulo> &x) noexcept { lint tmp; is >> tmp; x = Mint<Modulo>(tmp); return is; } friend constexpr Mint<Modulo> modpow(const Mint<Modulo> &a, lint n) noexcept { Mint res(1), tmp = a; while (n > 0) { if (n & 1) res *= tmp; tmp *= tmp; n >>= 1; } return res; } }; //// mod, base from https://gist.github.com/privet-kitty/295ac9202b7abb3039b493f8238bf40f class RollingHash { private: using Mint1 = Mint<2147483647>; using Mint2 = Mint<2147483629>; vector<Mint1> hash1, pow1; vector<Mint2> hash2, pow2; const int base1 = 2147483634; const int base2 = 2147483627; int sz; public: RollingHash() {} RollingHash(const string &s) :sz(s.size()) { hash1.assign(sz + 1, 0); pow1.assign(sz + 1, 1); hash2.assign(sz + 1, 0); pow2.assign(sz + 1, 1); for (int i = 0; i < sz; i++) { hash1[i + 1] = hash1[i] * base1 + s[i]; pow1[i + 1] = pow1[i] * base1; hash2[i + 1] = hash2[i] * base2 + s[i]; pow2[i + 1] = pow2[i] * base2; } } pair<int, int> get(int l, int r) { int res1 = (hash1[r] - hash1[l] * pow1[r - l]).val; int res2 = (hash2[r] - hash2[l] * pow2[r - l]).val; return { res1, res2 }; } }; int main() { cin.tie(nullptr); ios::sync_with_stdio(false); string s; cin >> s; RollingHash rh(s); int ll = 0, lr = 1, rr = s.size(), rl = rr-1; int ans = 1; while (rl - lr > 0) { if (rh.get(ll, lr) == rh.get(rl, rr)) { DMP(ll, lr, rl, rr); ans++; ll = lr; rr = rl; } lr++, rl--; } cout << ans << "\n"; return 0; }