結果
問題 | No.1731 Product of Subsequence |
ユーザー |
|
提出日時 | 2021-11-06 21:38:24 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,377 bytes |
コンパイル時間 | 4,032 ms |
コンパイル使用メモリ | 239,680 KB |
実行使用メモリ | 14,080 KB |
最終ジャッジ日時 | 2024-11-07 20:40:34 |
合計ジャッジ時間 | 12,217 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 28 WA * 3 |
コンパイルメッセージ
main.cpp: In function 'int main()': main.cpp:65:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions] 65 | for(auto [p,_]:prim){ | ^
ソースコード
#include <atcoder/all> using namespace atcoder; #include <bits/stdc++.h> #define all(a) (a.begin()),(a.end()) #define rall(a) (a.rbegin()),(a.rend()) using namespace std; using ll=long long; using ld=long double; using pll=pair<ll,ll>; template<class T>bool chmax(T &a, const T &b) {if(a<b) {a=b; return 1;} return 0;} template<class T>bool chmin(T &a, const T &b) {if(b<a) {a=b; return 1;} return 0;} template<class T1, class T2>istream& operator >> (istream& is, pair<T1,T2>& p) { is >> p.first >> p.second; return is; } template<class T1, class T2>ostream& operator << (ostream& os, const pair<T1,T2>& p) { os << p.first << " " << p.second; return os;} template<class T>istream& operator >> (istream& is, vector<T>& v) { for(T& x:v) is >> x; return is; } template<class T>ostream& operator << (ostream& os, const vector<T>& v) {for(int i=0;i<v.size();i++) {os << v[i] << (i+1 == v.size() ? "":" ");} return os;} //istream& operator >> (istream& is, modint1000000007& x) { unsigned int t; is >> t; x=t; return is; } //istream& operator >> (istream& is, modint998244353& x) { unsigned int t; is >> t; x=t; return is; } ostream& operator << (ostream& os, const modint1000000007& x) { os << x.val(); return os; } ostream& operator << (ostream& os, const modint998244353& x) { os << x.val(); return os; } template<class... A> void pt() { std::cout << "\n"; } template<class... A> void pt_rest() { std::cout << "\n"; } template<class T, class... A> void pt_rest(const T& first, const A&... rest) { std::cout << " " << first; pt_rest(rest...); } template<class T, class... A> void pt(const T& first, const A&... rest) { std::cout << first; pt_rest(rest...); } static const ll INF=1e18+7; static const double PI=acos(-1); static const double EPS=1e-10; using v1d=vector<ll>; using v2d=vector<v1d>; using v3d=vector<v2d>; using v4d=vector<v3d>; vector<pll>prime_factrization(ll n){ vector<pll>res; for(ll i=2;i*i<=n;i++){ ll cnt=0; while(n%i==0){ cnt++; n/=i; } if(cnt)res.push_back({i,cnt}); } if(n>1)res.push_back({n,1}); return res; } int main(void) { cin.tie(nullptr); ios::sync_with_stdio(false); ll N,K;cin>>N>>K; v1d a(N);cin>>a; using mint=modint1000000007; if(K==1){pt(mint(2).pow(N-1));return 0;}; vector<pll>prim=prime_factrization(K); ll M=prim.size(); v2d cnt(N); for(ll i=0;i<N;i++){ v1d v; for(auto [p,_]:prim){ ll t=0; while(a[i]%p==0){ t++; a[i]/=p; } v.push_back(t); } cnt[i]=v; } auto convert=[&](v1d v){ ll res=0; for(ll i=0;i<M-1;i++){ ll base=prim[i+1].second+1; res+=v[i]; res*=base; } res+=v.back(); return res; }; auto rev=[&](ll S){ v1d res; for(ll i=M-1;i>=1;i--){ ll base=prim[i].second+1; res.push_back(S%base); S/=base; } res.push_back(S); reverse(all(res)); return res; }; ll S=1; for(ll i=0;i<M;i++)S*=prim[i].second+1; vector<vector<mint>>dp(N+1,vector<mint>(S)); dp[0][0]=1; for(ll i=0;i<N;i++){ for(ll j=0;j<S;j++){ dp[i+1][j]+=dp[i][j]; v1d v=rev(j); for(ll k=0;k<M;k++){ v[k]+=cnt[i][k]; chmin(v[k],prim[k].second); } ll nxt=convert(v); if(nxt<S)dp[i+1][nxt]+=dp[i][j]; } } pt(dp[N][S-1]); }