結果
問題 | No.2036 Max Middle |
ユーザー |
|
提出日時 | 2022-08-12 21:55:20 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 26 ms / 2,000 ms |
コード長 | 2,369 bytes |
コンパイル時間 | 3,195 ms |
コンパイル使用メモリ | 179,560 KB |
最終ジャッジ日時 | 2025-01-30 21:04:59 |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 17 |
ソースコード
#include <iostream>#include <vector>#include <string>#include <map>#include <set>#include <queue>#include <algorithm>#include <cmath>#include <iomanip>#include <random>#include <stdio.h>#include <fstream>#include <functional>#include <cassert>#include <unordered_map>#include <bitset>#include <atcoder/all>using namespace std;using namespace atcoder;#define rep(i,n) for (int i=0;i<n;i+=1)#define rrep(i,n) for (int i=n-1;i>-1;i--)#define pb push_back#define all(x) (x).begin(), (x).end()template<class T>using vec = vector<T>;template<class T>using vvec = vec<vec<T>>;template<class T>using vvvec = vec<vvec<T>>;using ll = long long;using pii = pair<int,int>;using pll = pair<ll,ll>;template<class T>bool chmin(T &a, T b){if (a>b){a = b;return true;}return false;}template<class T>bool chmax(T &a, T b){if (a<b){a = b;return true;}return false;}template<class T>T sum(vec<T> x){T res=0;for (auto e:x){res += e;}return res;}template<class T>ostream& operator<<(ostream& os, const vec<T>& A){os << "[";rep(i,A.size()){os << A[i];if (i!=A.size()-1){os << ' ';}}os<<"]";return os;}template<class T>ostream& operator<<(ostream& os, const set<T>& A){os << "{";for (auto e:A){os << e;auto it = A.find(e);it++;if (it!=A.end()){os << " ";}}os << "}";return os;}template<class T,class U>ostream& operator<<(ostream& os, const pair<T,U>& A){os << "(" << A.first <<", " << A.second << ")";return os;}template<class T>ostream& operator<<(ostream& os, const deque<T>& A){os << "deque({";rep(i,A.size()){os << A[i];if (i!=A.size()-1){os << ' ';}}os<<"})";return os;}using mint = modint998244353;ostream& operator<<(ostream& os, const mint& a){os << a.val();return os;}int main(){ios::sync_with_stdio(false);std::cin.tie(nullptr);int N;cin>>N;vec<int> A(N);rep(i,N){cin>>A[i];}ll L = 0, R = N-1;while (L < N-1 && A[L+1] < A[L]){L++;}while (0 < R & A[R-1] < A[R]){R--;}ll res = 0;while (L<R){res += R-L-1;L++;R--;while (L < R && A[L+1] < A[L]){L++;}while (L < R & A[R-1] < A[R]){R--;}}cout << res << endl;}