Submission #674615

#	Time	Username	Problem	Language	Result	Execution time	Memory
674615		QwertyPi	Discharging (NOI20_discharging)	C++14	36 / 100	1100 ms	20976 KiB

Discharging

#include <bits/stdc++.h>
#define int long long
using namespace std;

const int N = 1e6 + 11;
int a[N];
int dp[N]; 
int32_t main(){
	cin.tie(0); cout.tie(0)->sync_with_stdio(false);
	int n; cin >> n;
	for(int i = 0; i < n; i++) cin >> a[i];
	for(int i = 1; i < n; i++) a[i] = max(a[i - 1], a[i]);
	memset(dp, 0x3f, sizeof(dp)); dp[0] = 0;
	for(int i = 0; i < n; i++){
		for(int j = 0; j <= i; j++){
			dp[i + 1] = min(dp[i + 1], dp[j] + a[i] * (n - j)); 
		}
	}
	cout << dp[n] << endl;
}

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