結果
問題 | No.1331 Moving Penguin |
ユーザー |
|
提出日時 | 2021-11-13 02:10:14 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 377 ms / 1,500 ms |
コード長 | 2,504 bytes |
コンパイル時間 | 4,058 ms |
コンパイル使用メモリ | 256,268 KB |
最終ジャッジ日時 | 2025-01-25 17:39:17 |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
other | AC * 49 |
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;} 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; } istream& operator >> (istream& is, modint& 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; } ostream& operator << (ostream& os, const modint& x) { os << x.val(); return os; } 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;} 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 v1=vector<ll>; using v2=vector<v1>; using v3=vector<v2>; int main(void) { cin.tie(nullptr); ios::sync_with_stdio(false); ll N;cin>>N; v1 a(N+1);for(ll i=1;i<=N;i++)cin>>a[i]; using mint=modint1000000007; vector<mint> dp(N+1); ll LIM=sqrt(N); vector<vector<mint>> s(LIM+1,vector<mint>(LIM+1)); dp[1]=1; for(ll i=1;i<=N;i++){ for(ll j=1;j<=LIM;j++)dp[i]+=s[i%j][j]; if(a[i]>1 and i+1<=N)dp[i+1]+=dp[i]; if(a[i]<=LIM)s[i%a[i]][a[i]]+=dp[i]; else for(ll j=i+a[i];j<=N;j+=a[i])dp[j]+=dp[i]; } pt(dp[N]); }