結果
問題 | No.2365 Present of good number |
ユーザー |
![]() |
提出日時 | 2023-06-30 22:13:05 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,703 bytes |
コンパイル時間 | 4,232 ms |
コンパイル使用メモリ | 267,200 KB |
最終ジャッジ日時 | 2025-02-15 04:02:00 |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 6 WA * 33 |
ソースコード
#include <bits/stdc++.h>#include <atcoder/all>using namespace std;using namespace atcoder;//using mint = modint1000000007;using mint = atcoder::modint;const int mod = 1000000007;const int mod2 = mod - 1;//using mint = modint998244353;//const int mod = 998244353;//const int INF = 1e9;//const long long LINF = 1e18;#define rep(i, n) for (int i = 0; i < (n); ++i)#define rep2(i,l,r)for(int i=(l);i<(r);++i)#define rrep(i, n) for (int i = (n-1); i >= 0; --i)#define rrep2(i,l,r)for(int i=(r-1);i>=(l);--i)#define all(x) (x).begin(),(x).end()#define allR(x) (x).rbegin(),(x).rend()#define endl "\n"#define P pair<int,int>template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }// 素因数分解vector<pair<long long, int>> PrimeFactorization(long long n) {vector<pair<long long, int>> ret;for (long long i = 2; i*i <= n; i++) {int c = 0;while (n%i == 0) { // 素数で割り切れなくなるまで割っていくc++;//割った個数を配列に足すn /= i;}if (0 != c) ret.push_back({ i,c });if (1 == n) break;}if (1 != n) ret.push_back({ n,1 });return ret;}vector<vector<mint>> mul(vector<vector<mint>>&A, vector<vector<mint>>&B) {vector<vector<mint>> C(A.size(), vector<mint>(B[0].size()));rep(i, A.size()) rep(j, B[0].size()) rep(k, A[0].size()) C[i][j] += A[i][k] * B[k][j];//rep(i, A.size()) rep(j, B[0].size()) rep(k, A[0].size()) C[i][j] += A[i][k] & B[k][j];return C;}int main() {ios::sync_with_stdio(false);cin.tie(nullptr);mint::set_mod(mod2);int n; cin >> n;long long k; cin >> k;auto list = PrimeFactorization(n);map<int, mint>mp;bool chk = false;rep(i, list.size()) {mp[list[i].first] += list[i].second;if (list[i].first > 3)chk = true;}while (chk && (k--)) {chk = false;map<int, mint>nmp;for (auto[k, v] : mp) {auto list = PrimeFactorization(k + 1);for (auto[p, c] : list) {nmp[p] += v * c;if (p > 3)chk = true;}}swap(mp, nmp);}if (k > 0) {vector<vector<mint>> mans(2, vector<mint>(2));rep(i, 2)mans[i][i] = 1;vector<vector<mint>> mpow(2, vector<mint>(2));mpow[0][1] = 2;mpow[1][0] = 1;while (k > 0) {if (1 == k % 2) mans = mul(mpow, mans);mpow = mul(mpow, mpow);k /= 2;}map<int, mint>nmp;nmp[2] = mans[0][0] * mp[2] + mans[0][1] * mp[3];nmp[3] = mans[1][0] * mp[2] + mans[1][1] * mp[3];swap(mp, nmp);}mint ans = 1;for (auto[k, v] : mp) ans *= pow_mod(k, v.val(), mod);cout << ans.val() << endl;return 0;}