結果
問題 | No.387 ハンコ |
ユーザー | anta |
提出日時 | 2016-06-23 03:17:21 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 717 ms / 5,000 ms |
コード長 | 4,126 bytes |
コンパイル時間 | 1,941 ms |
コンパイル使用メモリ | 178,972 KB |
実行使用メモリ | 7,424 KB |
最終ジャッジ日時 | 2024-10-11 19:50:23 |
合計ジャッジ時間 | 8,413 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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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 | 551 ms
7,296 KB |
testcase_01 | AC | 555 ms
7,296 KB |
testcase_02 | AC | 713 ms
7,424 KB |
testcase_03 | AC | 715 ms
7,424 KB |
testcase_04 | AC | 77 ms
5,248 KB |
testcase_05 | AC | 246 ms
5,632 KB |
testcase_06 | AC | 428 ms
7,168 KB |
testcase_07 | AC | 716 ms
7,296 KB |
testcase_08 | AC | 717 ms
7,296 KB |
ソースコード
//1個しか出現しないのをFFTでまとめてやる #include "bits/stdc++.h" using namespace std; #define rep(i,n) for(int (i)=0;(i)<(int)(n);++(i)) #define rer(i,l,u) for(int (i)=(int)(l);(i)<=(int)(u);++(i)) #define reu(i,l,u) for(int (i)=(int)(l);(i)<(int)(u);++(i)) static const int INF = 0x3f3f3f3f; static const long long INFL = 0x3f3f3f3f3f3f3f3fLL; typedef vector<int> vi; typedef pair<int, int> pii; typedef vector<pair<int, int> > vpii; typedef long long ll; template<typename T, typename U> static void amin(T &x, U y) { if(y < x) x = y; } template<typename T, typename U> static void amax(T &x, U y) { if(x < y) x = y; } template<int MOD> struct ModInt { static const int Mod = MOD; unsigned x; ModInt() : x(0) {} ModInt(signed sig) { int sigt = sig % MOD; if(sigt < 0) sigt += MOD; x = sigt; } ModInt(signed long long sig) { int sigt = sig % MOD; if(sigt < 0) sigt += MOD; x = sigt; } 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 { signed a = x, b = MOD, u = 1, v = 0; while(b) { signed t = a / b; a -= t * b; std::swap(a, b); u -= t * v; std::swap(u, v); } if(u < 0) u += Mod; ModInt res; res.x = (unsigned)u; return res; } }; typedef ModInt<998244353> fft_mint; const int OmegaMax = 23; fft_mint OmegaPrim = 31; fft_mint Omega[OmegaMax + 1]; void fft_init() { if(Omega[OmegaMax].get() != 0) return; fft_mint x = OmegaPrim; for(int i = OmegaMax; i >= 0; i --) { Omega[i] = x; x *= x; } } //aを破壊する void fft_main(int logn, const bool inv, fft_mint a[]) { fft_init(); int n = 1 << logn; fft_mint ww = Omega[logn]; if(inv) ww = ww.inverse(); for(int m = n, mi = 0; m >= 2; m >>= 1, mi ++) { int mh = m >> 1; fft_mint w = 1; rep(i, mh) { for(int j = i; j < n; j += m) { int k = j + mh; fft_mint x = a[j] - a[k]; a[j] += a[k]; a[k] = w * x; } w *= ww; } ww *= ww; } int i = 0; reu(j, 1, n - 1) { for(int k = n >> 1; k > (i ^= k); k >>= 1); if(j < i) swap(a[i], a[j]); } } void fft(int logn, fft_mint a[]) { fft_main(logn, false, a); } void inverse_fft(int logn, fft_mint a[]) { fft_main(logn, true, a); int n = 1 << logn; fft_mint invn = fft_mint(n).inverse(); rep(i, n) a[i] *= invn; } //v, wを破壊し、vに結果を返す //v, wのサイズは 2^logn, lognはceil(log_2(size(v) + size(w)))必要 void convolution(fft_mint v[], fft_mint w[], int logn) { fft(logn, v); fft(logn, w); rep(i, 1 << logn) v[i] *= w[i]; inverse_fft(logn, v); } int main() { int N; scanf("%d", &N); vector<int> a(N); for(int i = 0; i < N; ++ i) scanf("%d", &a[i]); vector<int> b(N); for(int i = 0; i < N; ++ i) scanf("%d", &b[i]); typedef bitset<200000> Bitset; Bitset B; rep(i, N) if(b[i] == 1) B.set(i); vector<pair<int, int>> ais(N); rep(i, N) ais[i] = make_pair(a[i], i); sort(ais.begin(), ais.end()); Bitset C; vector<int> o(N); for(int i = 0; i < N; ) { int j = i; if(i + 1 < N && ais[i + 1].first == ais[i].first) { Bitset A; for(; j < N && ais[j].first == ais[i].first; ++ j) { int shift = ais[j].second; A |= B << shift; } C ^= A; i = j; } else { o[ais[i].second] = 1; ++ i; } } { int log2n = 0; while((1 << log2n) < (N + N)) ++ log2n; vector<fft_mint> bb(1 << log2n), oo(1 << log2n); rep(i, N) bb[i].x = b[i]; rep(i, N) oo[i].x = o[i]; convolution(bb.data(), oo.data(), log2n); rep(i, 2 * N - 1) if(bb[i].get() % 2) C.flip(i); } rep(i, N * 2 - 1) puts(C[i] ? "ODD" : "EVEN"); return 0; }