Submission #966611

#	Time	Username	Problem	Language	Result	Execution time	Memory
966611		Trisanu_Das	Discharging (NOI20_discharging)	C++17	47 / 100	299 ms	20396 KiB

Discharging

# include <bits/stdc++.h>
using namespace std;
long long b[1000005], n,a[1000005],mn,mx,raod,x,w,ww;
pair <long long ,long long > dp[1000005];
int main()
{
	cin>>n;
	a[0]=1e9;
	for (int i=1; i<=n; i++) {
		cin>>a[i];
		mx=max(mx,a[i]);
		if (a[i]>a[i-1]) ww=1;
	}
	if (n>1500) {
	    cout<<mx*n<<endl;
	    return 0;
	}
	dp[0]={0,0};
	dp[1]={a[1]+(n-1)*a[1],a[1]};
	for (int i=2; i<=n; i++) {
		dp[i].first=1e18;
		x=0;
		for (int j=i; j>=1; j--) {
			x=max(x,a[j]);
			dp[i].first=min(dp[i].first, dp[j-1].first+(n-j+1)*x);
			
		}
	}
	cout<<dp[n].first;
}

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