結果
問題 | No.2756 GCD Teleporter |
ユーザー | pitP |
提出日時 | 2024-05-10 23:09:42 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 101 ms / 2,000 ms |
コード長 | 5,178 bytes |
コンパイル時間 | 6,246 ms |
コンパイル使用メモリ | 327,616 KB |
実行使用メモリ | 15,500 KB |
最終ジャッジ日時 | 2024-12-20 07:23:37 |
合計ジャッジ時間 | 10,095 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 36 |
ソースコード
#include <bits/stdc++.h> #include <atcoder/all> using namespace std; using namespace atcoder; istream &operator>>(istream &is, modint &a) { long long v; is >> v; a = v; return is; } ostream &operator<<(ostream &os, const modint &a) { return os << a.val(); } istream &operator>>(istream &is, modint998244353 &a) { long long v; is >> v; a = v; return is; } ostream &operator<<(ostream &os, const modint998244353 &a) { return os << a.val(); } istream &operator>>(istream &is, modint1000000007 &a) { long long v; is >> v; a = v; return is; } ostream &operator<<(ostream &os, const modint1000000007 &a) { return os << a.val(); } typedef long long ll; typedef vector<vector<int>> Graph; typedef pair<int, int> pii; typedef pair<ll, ll> pll; #define FOR(i,l,r) for (int i = l;i < (int)(r); i++) #define rep(i,n) for (int i = 0;i < (int)(n); i++) #define all(x) x.begin(), x.end() #define rall(x) x.rbegin(), x.rend() #define my_sort(x) sort(x.begin(), x.end()) #define my_max(x) *max_element(all(x)) #define my_min(x) *min_element(all(x)) template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } const int INF = (1<<30) - 1; const ll LINF = (1LL<<62) - 1; const int MOD = 998244353; const int MOD2 = 1e9+7; const double PI = acos(-1); vector<int> di = {1,0,-1,0}; vector<int> dj = {0,1,0,-1}; #ifdef LOCAL # include <debug_print.hpp> # define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__) #else # define debug(...) (static_cast<void>(0)) #endif // https://qiita.com/drken/items/3beb679e54266f20ab63 struct Eratosthenes{ int N; vector<bool> isprime; vector<int> minfactor, mobius; Eratosthenes(int N_max = 1e7){init(N_max);} //初期化 void init(int N_max = 1e7){ int N = N_max; isprime.assign(N+1,true); minfactor.assign(N+1,-1); mobius.assign(N+1,1); //Eratosthenes O(NloglogN) isprime[0] = false; isprime[1] = false; for(int p=2;p<=N;p++){ if (!isprime[p])continue; minfactor[p] = p; mobius[p] = -1; //pの倍数の処理 for(int q=2*p;q<=N;q+=p){ isprime[q] = false; if (minfactor[q] == -1){ minfactor[q] = p; } if ((q/p) % p == 0) mobius[q] = 0; else mobius[q] *= -1; } } } //素数判定,O(1) bool judge_prime(int num){ return isprime[num]; } //素数列挙,O(N) vector<int> list_primes(int num = -1){ if (num == -1) num = N; vector<int> primes; for(int p=0;p<=num;p++){ if (isprime[p]) primes.push_back(p); } return primes; } //高速素因数分解,O(logN),{(素因数,個数)...} vector<pii> factorize(int x){ vector<pii> ans; while(x > 1){ int p = minfactor[x]; int e = 0; while(minfactor[x] == p){ x /= p; e++; } ans.push_back(make_pair(p,e)); } return ans; } //高速約数列挙 O(240(N <= 1e6),1344(N <= 1e9)) vector<int> divisors(int x){ vector<int> ans; ans.push_back(1); vector<pii> facts = factorize(x); for(auto [p,e]:facts){ int s = ans.size(); for(int i=0;i<s;i++){ int v = 1; for(int j=0;j<e;j++){ v *= p; ans.push_back(ans[i] * v); } } } sort(all(ans)); return ans; } //オイラーのphi関数 ll euler_phi(int x){ auto facts = factorize(x); ll res = x; for(auto [p, e]:facts){ res = res - res / p; } return res; } //メビウス関数 //mobius[1] = 1 //nが素数pで2回以上割り切れる -> mobius[n] = 0 //mobius[n] = pow(-1,Nの素数の種類) int my_mobius(int x){ return mobius[x]; } }; int main(){ cin.tie(0); ios_base::sync_with_stdio(false); int N; cin >> N; vector<int> A(N); rep(i, N) cin >> A[i]; Eratosthenes er(200000); vector<int> p = er.list_primes(200000); int M = p.size(); map<int, int> mp; rep(i, M) mp[p[i]] = N + i; dsu uf(N + M); // [0, N), [N, N + M) rep(i, N){ vector<pii> pe = er.factorize(A[i]); for(auto &[p, _] : pe) uf.merge(i, mp[p]); } vector<ll> x; int cnt1 = 0; for(auto g : uf.groups()){ if((int)g.size() == 1) { if(g[0] < N) cnt1++; continue; } debug(g); int tmp = INF; for(auto v : g){ if(v < N) continue; chmin(tmp, p[v - N]); } x.push_back(tmp); } debug(cnt1); if(cnt1 == N){ cout << 2 * N << endl; return 0; } ll ans = LINF; chmin(ans, 2LL * ((ll)x.size() + cnt1)); chmin(ans, *min_element(all(x)) * ((ll)x.size() - 1LL + cnt1)); cout << ans << endl; }