제출 #288252

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
288252		someone_aa	Discharging (NOI20_discharging)	C++17	13 / 100	6 ms	416 KiB

Discharging

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
#define sz(x) int(x.size())
using namespace std;
const int maxn = 1510;
ll n, arr[maxn], dp[maxn];

int main() {
	cin>>n;

	dp[0] = 0;
	for(int i=1;i<=n;i++) {
		cin>>arr[i];

		ll maxval = 0LL;

		dp[i] = LLONG_MAX;
		int lst_j = i;
		for(int j=i;j>=1 && arr[j] <= arr[i];j--) {
			maxval = max(maxval, arr[j]);

			dp[i] = min(dp[i], dp[j-1] + (n - j + 1) * maxval);

			lst_j = j;
		}

		lst_j--;
		if(lst_j >= 1) {
			dp[i] = min(dp[i], dp[lst_j - 1] + (n - lst_j + 1) * arr[lst_j]);
		}
	}

	cout<<dp[n]<<"\n";
	return 0;
}

• Subtask 1: 0 / 9
• Subtask 2: 13 / 13
• Subtask 3: 0 / 25
• Subtask 4: 0 / 11
• Subtask 5: 0 / 14
• Subtask 6: 0 / 28