結果
問題 | No.2428 Returning Shuffle |
ユーザー |
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提出日時 | 2023-08-19 15:11:51 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 530 ms / 2,000 ms |
コード長 | 2,280 bytes |
コンパイル時間 | 4,496 ms |
コンパイル使用メモリ | 260,644 KB |
最終ジャッジ日時 | 2025-02-16 11:34:23 |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 23 |
ソースコード
#include <bits/stdc++.h>using namespace std;#include <atcoder/all>using namespace atcoder;using ll = long long;using VI = vector<int>;using VVI = vector<VI>;using VL = vector<ll>;using VVL = vector<VL>;using VD = vector<double>;using VVD = vector<VD>;using VS = vector<string>;using P = pair<ll,ll>;using VP = vector<P>;#define rep(i, n) for (ll i = 0; i < ll(n); i++)#define out(x) cout << x << endl#define dout(x) cout << fixed << setprecision(10) << x << endl#define all(a) (a).begin(),(a).end()#define rall(a) (a).rbegin(),(a).rend()#define sz(x) (int)(x.size())#define re0 return 0#define pcnt __builtin_popcountlltemplate<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; }constexpr int inf = 1e9;constexpr ll INF = 1e18;//using mint = modint1000000007;using mint = modint998244353;int di[4] = {1,0,-1,0};int dj[4] = {0,1,0,-1};vector<pair<long long, long long> > prime_factorize(long long N) {vector<pair<long long, long long> > res;for (long long a = 2; a * a <= N; ++a) {if (N % a != 0) continue;long long ex = 0; // 指数while (N % a == 0) {++ex;N /= a;}res.push_back({a, ex});}if (N != 1) res.push_back({N, 1});return res;}int main(){int n,m;cin >> n >> m;VI p(n);iota(all(p),0);rep(mi,m){int t;cin >> t;VI s(t);rep(i,t){cin >> s[i];s[i]--;}int ls = p[s.back()];for(int i = t-2;i >= 0;i--){p[s[i+1]] = p[s[i]];}p[s[0]] = ls;}/* rep(i,n) cout << p[i]+1 << ' ';cout << endl; */dsu uf(n);rep(i,n) uf.merge(i,p[i]);map<ll,ll> mp;rep(i,n){if(uf.leader(i) != i) continue;VP pr = prime_factorize(uf.size(i));for(auto c:pr){if(!mp.count(c.first)){mp[c.first] = c.second;} else {chmax(mp[c.first],c.second);}}}mint ans = 1;for(auto c:mp){ans *= mint(c.first).pow(c.second);}out(ans.val());}