Submission #706879

#	Time	Username	Problem	Language	Result	Execution time	Memory
706879		ld_minh4354	Bigger segments (IZhO19_segments)	C++17	37 / 100	18 ms	812 KiB

segments

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

#define int long long
#define fi first
#define se second
#define pb push_back
#define debug(x) cout<<#x<<": "<<x<<"\n"



signed main()
{
	ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
//	freopen("input.000","r",stdin);
//	freopen("output.000","w",stdout);
//	srand((unsigned)time(NULL));
//	rand()
	
	int n,i,a[3005],j,pre[3005];
	pair<int,int> dp[3005];
	
	cin>>n;
	for (i=1;i<n+1;i++) cin>>a[i];
	
	pre[1]=a[1];
	for (i=2;i<n+1;i++) pre[i]=pre[i-1]+a[i];
	
	dp[1]={1,-a[1]};
	for (i=2;i<n+1;i++)
	{
		dp[i]={1,-pre[i]};
		for (j=1;j<i;j++) if (-dp[j].se<=pre[i]-pre[j])
		{
			dp[i]=max(dp[i], {dp[j].fi+1, -pre[i]+pre[j]});
		}
	}
	
//	for (i=1;i<n+1;i++) cout<<dp[i].fi<<" "<<dp[i].se<<"\n";
	cout<<dp[n].fi;
}

• Subtask 1: 13 / 13
• Subtask 2: 14 / 14
• Subtask 3: 10 / 10
• Subtask 4: 0 / 36
• Subtask 5: 0 / 27