結果
問題 | No.1145 Sums of Powers |
ユーザー | SSRS |
提出日時 | 2020-07-31 23:07:51 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,947 bytes |
コンパイル時間 | 1,825 ms |
コンパイル使用メモリ | 191,120 KB |
実行使用メモリ | 292,940 KB |
最終ジャッジ日時 | 2024-07-06 20:57:09 |
合計ジャッジ時間 | 5,342 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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
13,752 KB |
testcase_01 | WA | - |
testcase_02 | WA | - |
testcase_03 | TLE | - |
testcase_04 | -- | - |
testcase_05 | -- | - |
ソースコード
#include <bits/stdc++.h> using namespace std; const long long MOD = 998244353; map<long long, long long> mp; long long modpow(long long a, long long b){ if (mp.count(b)){ return mp[b]; } else { long long ans = 1; while (b > 0){ if (b % 2 == 1){ ans *= a; ans %= MOD; } a *= a; a %= MOD; b /= 2; } mp[b] = ans; return mp[b]; } } map<long long, long long> mp2; long long modinv(long long a){ if (mp2.count(a)){ return mp2[a]; } else { mp2[a] = modpow(a, MOD - 2); return mp2[a]; } } vector<long long> ntt(vector<long long> A, bool inv){ int N = A.size(); int M = 0; for (int i = 1; i < N; i *= 2){ M++; } for (int i = 0; i < N; i++){ int j = 0; for (int k = 0; k < M; k++){ if ((i >> k) & 1){ j |= 1 << (M - 1 - k); } } if (i < j){ swap(A[i], A[j]); } } for (int i = 1; i < N; i *= 2){ long long z = modpow(3, (MOD - 1) / (i * 2)); if (inv){ z = modinv(z); } long long z2 = 1; for (int j = 0; j < i; j++){ for (int k = 0; k < N; k += i * 2){ long long s = A[j + k]; long long t = A[j + k + i] * z2 % MOD; A[j + k] = (s + t) % MOD; A[j + k + i] = (s - t + MOD) % MOD;; } z2 = z2 * z % MOD; } } if (inv){ int Ninv = modinv(N); for (int i = 0; i < N; i++){ A[i] = A[i] * Ninv % MOD; } } return A; } vector<long long> convolution(vector<long long> &A, vector<long long> &B, int d = 0){ int deg = A.size() + B.size() - 1; if (d == 0){ d = deg; } int N = 1; while (N < deg){ N *= 2; } while (A.size() < N){ A.push_back(0); } while (B.size() < N){ B.push_back(0); } vector<long long> a = ntt(A, false); vector<long long> b = ntt(B, false); vector<long long> c(N); for (int i = 0; i < N; i++){ c[i] = a[i] * b[i] % MOD; } c = ntt(c, true); vector<long long> ans(d); for (int i = 0; i < d; i++){ ans[i] = c[i]; } return ans; } vector<long long> add(vector<long long> A, vector<long long> B){ int N = max(A.size(), B.size()); while (A.size() < N){ A.push_back(0); } while (B.size() < N){ B.push_back(0); } vector<long long> ans(N, 0); for (int i = 0; i < N; i++){ ans[i] = A[i] + B[i]; if (ans[i] > MOD){ ans[i] -= MOD; } } return ans; } vector<long long> inverse(vector<long long> P){ int N = P.size(); vector<long long> ans(1); ans[0] = modinv(P[0]); for (int i = 1; i < N; i *= 2){ vector<long long> ans2 = ans; ans2.resize(i * 4); vector<long long> f(min(N, i * 2)); for (int j = 0; j < min(N, i * 2); j++){ f[j] = P[j]; } f.resize(i * 4); ans2 = convolution(ans2, ans2); ans2 = convolution(ans2, f); ans2.resize(i * 2); for (int j = 0; j < i; j++){ ans2[j] = MOD - ans2[j] + ans[j] * 2; ans2[j] %= MOD; } swap(ans, ans2); } ans.resize(N); return ans; } int main(){ int N, M; cin >> N >> M; vector<long long> A(N); for (int i = 0; i < N; i++){ cin >> A[i]; } int N2 = 1; while (N2 < N){ N2 *= 2; } vector<pair<vector<long long>, int>> ST1(N2 * 2 - 1); for (int i = 0; i < N; i++){ vector<long long> f = {1, MOD - A[i]}; ST1[N2 - 1 + i] = make_pair(f, 1); } for (int i = N; i < N2; i++){ vector<long long> f = {1}; ST1[N2 - 1 + i] = make_pair(f, 0); } for (int i = N2 - 2; i >= 0; i--){ int deg = min(M + 1, ST1[i * 2 + 1].second + ST1[i * 2 + 2].second + 1); ST1[i] = make_pair(convolution(ST1[i * 2 + 1].first, ST1[i * 2 + 2].first, deg), deg); } while (ST1[0].first.size() <= M * 2){ ST1[0].first.push_back(0); } /* for (int i = 0; i <= M; i++){ cout << ST1[0].first[i] << ' '; } cout << endl; */ vector<pair<vector<long long>, int>> ST2(N2 * 2 - 1); for (int i = 0; i < N; i++){ vector<long long> f = {1}; ST2[N2 - 1 + i] = make_pair(f, 1); } for (int i = N; i < N2; i++){ vector<long long> f = {0}; ST2[N2 - 1 + i] = make_pair(f, 0); } for (int i = N2 - 2; i >= 0; i--){ if (ST2[i * 2 + 2].second == 0){ ST2[i] = ST2[i * 2 + 1]; } else { int deg = min(M + 1, ST2[i * 2 + 1].second + ST2[i * 2 + 2].second); ST2[i] = make_pair(add(convolution(ST2[i * 2 + 1].first, ST1[i * 2 + 2].first, deg), convolution(ST1[i * 2 + 1].first, ST2[i * 2 + 2].first, deg)), deg); } } while (ST2[0].first.size() <= M * 2){ ST2[0].first.push_back(0); } /* for (int i = 0; i <= M; i++){ cout << ST2[0].first[i] << ' '; } cout << endl; */ vector<long long> g = ST1[0].first; vector<long long> f = ST2[0].first; //f/g vector<long long> g_inv = inverse(g); /* vector<long long> h = convolution(g, g_inv); for (int i = 0; i <= M; i++){ cout << h[i] << ' '; } cout << endl; */ vector<long long> ans = convolution(f, g_inv); for (int i = 1; i <= M; i++){ cout << ans[i]; if (i < M){ cout << ' '; } } cout << endl; }