結果
問題 | No.430 文字列検索 |
ユーザー | tatyam |
提出日時 | 2019-09-12 23:28:05 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 610 ms / 2,000 ms |
コード長 | 3,288 bytes |
コンパイル時間 | 2,724 ms |
コンパイル使用メモリ | 222,104 KB |
実行使用メモリ | 8,192 KB |
最終ジャッジ日時 | 2024-11-10 00:32:02 |
合計ジャッジ時間 | 9,439 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 | 3 ms
7,284 KB |
testcase_01 | AC | 587 ms
8,008 KB |
testcase_02 | AC | 606 ms
8,064 KB |
testcase_03 | AC | 598 ms
7,980 KB |
testcase_04 | AC | 4 ms
7,196 KB |
testcase_05 | AC | 4 ms
7,296 KB |
testcase_06 | AC | 4 ms
7,424 KB |
testcase_07 | AC | 4 ms
7,420 KB |
testcase_08 | AC | 9 ms
8,064 KB |
testcase_09 | AC | 4 ms
7,220 KB |
testcase_10 | AC | 5 ms
7,424 KB |
testcase_11 | AC | 609 ms
8,120 KB |
testcase_12 | AC | 593 ms
8,192 KB |
testcase_13 | AC | 600 ms
8,148 KB |
testcase_14 | AC | 593 ms
8,112 KB |
testcase_15 | AC | 610 ms
8,016 KB |
testcase_16 | AC | 607 ms
8,192 KB |
testcase_17 | AC | 602 ms
8,064 KB |
ソースコード
#pragma GCC optimize("unroll-loops") #include <bits/stdc++.h> using namespace std; using uint = unsigned; using ll = long long; using ull = unsigned long long; const int bases[64] = {257,262,266,275,276,281,285,290,296,302,306,310,311,313,323,333,344,345,350,357,367,370,373,402,423,425,431,440,442,443,454,457,458,462,471,478,481,487,489,492,499,501,502,503,506,514,524,532,535,541,550,552,557,559,562,563,567,570,571,580,592,597,604,612}; const ull mod = 0x1fffffffffffffff, base = bases[chrono::duration_cast<chrono::microseconds>(chrono::system_clock::now().time_since_epoch()).count() & 63]; ull mem[50000][10]; struct RollingHash { vector<ull> hashed, power; static constexpr ull mask(int a) { return (1ull << a) - 1; } inline ull mul(ull a, ull b) const { //* __uint128_t ans = __uint128_t(a) * b; /*/ // without __uint128_t ull a31 = a >> 31, b31 = b >> 31; a &= mask(31); b &= mask(31); ull x = a * b31 + b * a31; ull ans = (a31 * b31 << 1) + (x >> 30) + ((x & mask(30)) << 31) + a * b; //*/ ans = (ans >> 61) + (ans & mask(61)); if(ans >= mod) ans -= mod; return ans; } RollingHash(const string &s) { ll n = s.size(); hashed.assign(n + 1, 0); power.assign(n + 1, 0); power[0] = 1; for(ll i = 0; i < n; i++) { power[i + 1] = mul(power[i], base); hashed[i + 1] = mul(hashed[i], base) + s[i]; if(hashed[i + 1] >= mod) hashed[i + 1] -= mod; } } ull get(ll l, ll r) const { if(mem[l][r - l - 1] != mod) return mem[l][r - l - 1]; ull ret = hashed[r] + mod - mul(hashed[l], power[r - l]); if(ret >= mod) ret -= mod; return mem[l][r - l - 1] = ret; } ull connect(ull h1, ll h2, ll h2len) const { ull ret = mul(h1, power[h2len]) + h2; if(ret >= mod) ret -= mod; return ret; } void connect(const string &s){ ll n = hashed.size() - 1, m = s.size(); hashed.resize(n + m + 1); power.resize(n + m + 1); for(ll i = n; i < n + m; i++) { power[i + 1] = mul(power[i], base); hashed[i + 1] = mul(hashed[i], base) + s[i - n]; if(hashed[i + 1] >= mod) hashed[i + 1] -= mod; } } ll LCP(const RollingHash &b, ll l1, ll r1, ll l2, ll r2) { ll len = min(r1 - l1, r2 - l2); ll low = -1, high = len + 1; while(high - low > 1) { ll mid = (low + high) / 2; if(get(l1, l1 + mid) == b.get(l2, l2 + mid)) low = mid; else high = mid; } return low; } }; signed main() { for(auto& i : mem) for(auto& j : i) j = mod; string s; int m; cin >> s >> m; RollingHash rh(s); int ans = 0; for(ll i = 0; i < m; i++) { string t; cin >> t; __uint128_t rh2 = 0; for(auto i : t) { rh2 *= base; rh2 = (rh2 >> 61) + (rh2 & RollingHash::mask(61)); rh2 += i; if(rh2 >= mod) rh2 -= mod; } for(ll i = t.size(); i < s.size() + 1; i++) ans += rh.get(i - t.size(), i) == rh2; } cout << ans << endl; }