제출 #891278

#제출 시각아이디문제언어결과실행 시간메모리
891278loliconFinancial Report (JOI21_financial)C++14
48 / 100
4040 ms8528 KiB
#include <bits/stdc++.h> using namespace std; const int maxn = 3e5 + 5; vector<int> V; int A[maxn]; int n, D; void nndp() { vector<int> dp(n + 1), r(n + 1); for(int i = 1; i <= n; ++i) { int lst = i; for(int j = i; j <= n; ++j) { if(j - lst > D) break; if(A[j] <= A[i]) lst = j; } r[i] = lst + D; } // O(n^2) dp for(int i = 1; i <= n; ++i) { dp[i] = 1; for(int j = 1; j < i; ++j) { if(r[j] >= i && A[j] < A[i]) dp[i] = max(dp[i], dp[j] + 1); } } cout << *max_element(begin(dp), end(dp)) << '\n'; } signed main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); cin >> n >> D; for(int i = 1; i <= n; ++i) { cin >> A[i]; V.push_back(A[i]); } sort(begin(V), end(V)); for(int i = 1; i <= n; ++i) { A[i] = lower_bound(begin(V), end(V), A[i]) - begin(V) + 1; } nndp(); return 0; }
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