結果

問題 No.1378 Flattening
コンテスト
ユーザー eQe
提出日時 2021-11-25 09:42:03
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
WA  
実行時間 -
コード長 3,345 bytes
コンパイル時間 4,449 ms
コンパイル使用メモリ 252,780 KB
最終ジャッジ日時 2025-01-26 01:10:03
ジャッジサーバーID
（参考情報） 		judge3 / judge1
このコードへのチャレンジ
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ファイルパターン 結果
sample WA * 2
other WA * 33 OLE * 17
権限があれば一括ダウンロードができます

ソースコード

diff # 

#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...); }
template<typename V, typename H> void resize(vector<V>& vec, const H head){ vec.resize(head); }
template<typename V, typename H, typename ... T> void resize(vector<V>& vec, const H& head, const T ... tail){ vec.resize(head); for(auto& v: vec) resize(v, tail...); }
template<typename V, typename T> void fill(V& x, const T& val){ x = val; }
template<typename V, typename T> void fill(vector<V>& vec, const T& val){ for(auto& v: vec) fill(v, val); }
template<typename H> void input_set(istream& is, const int idx, vector<H>& head){ is >> head[idx]; }
template<typename H, typename ... T> void input_set(istream& is, const int idx, vector<H>& head, T& ... tail){ input_set(is >> head[idx], idx, tail...); }
template<typename H, typename ... T>
void input_set(istream& is, vector<H>& head, T& ... tail){ for(int i=0; i<head.size(); i++) input_set(is, i, head, tail...); }
template<typename H, typename ... T> void input_set(vector<H>& head, T& ... tail){ input_set(cin, head, tail...); }
static const ll inf=1e18+7;
static const ld pi=acos(-1);
static const ld eps=1e-10;
using v1=vector<ll>;
using v2=vector<v1>;
using v3=vector<v2>;
using v4=vector<v3>;
using mint=modint998244353;

int main(void) {
  cin.tie(nullptr);
  ios::sync_with_stdio(false);
  
  ll N;cin>>N;
  v1 a(N);cin>>a;
  
  vector<mint>dp;resize(dp,N+1);
  dp[0]=1;
  for(ll i=0;i<N;i++){
    ll l=i,r=i+1;
    while(l and a[l-1]>a[i])l--;
    while(r<N and a[i]<a[r])r++;
    for(ll j=l;j<r;j++)dp[j+1]+=dp[j];
    pt(dp);
  }
  pt(dp[N]);
}
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