Submission #647608

#	Time	Username	Problem	Language	Result	Execution time	Memory
647608		billyisme	Feast (NOI19_feast)	C++14	21 / 100	1047 ms	16300 KiB

feast

#include<bits/stdc++.h>
using namespace std ;
#define ll long long 
#define pb push_back 
#define pk pop_back 
#define pii pair<int,int> 
#define X first 
#define Y second 

const int N =2e3+5 , oo = 1e9 ; 
const ll inf = 1e17 , cs = 330 , sm = 1e9+7 ; 

int n  , k ;  
ll a[N] ,s[N] ; 
ll  f[N][N] ; 
ll res=0 ; 
ll ma[N][N] ;
void inp()
{
	cin>> n >> k ; 
	for(int i=1;i<=n;i++)
	{
		cin>>a[i] ; 
		s[i] =s[i-1]+a[i] ; 
	}
}
void solve()
{
	for(int i=1 ;i<=n;i++)
	{
		for(int j= 1;j<=k;j++)
		{
			for(int t= 1;t<=i;t++)
			{
				f[i][j] =max(f[i][j],s[i]-s[t-1]+ma[t-1][j-1]);
				ma[i][j] = max(ma[i-1][j],f[i][j]); 
				res=max(res,f[i][j]) ; 
			}
		}
	}
	cout<<res;
}
int main()
{
	ios_base::sync_with_stdio(0); cin.tie(0) ; cout.tie(0) ; 
	int t = 1; 
	while(t--)
	{
		inp() ; 
		solve() ; 
	}
}

• Subtask 1: 0 / 4
• Subtask 2: 0 / 8
• Subtask 3: 0 / 18
• Subtask 4: 10 / 10
• Subtask 5: 11 / 11
• Subtask 6: 0 / 20
• Subtask 7: 0 / 29