제출 #572187

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
572187		MODDI	Feast (NOI19_feast)	C++14	0 / 100	116 ms	262144 KiB

feast

#include <bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define vi vector<int>
#define vl vector<ll>
#define mp make_pair
#define pb push_back
using namespace std;
int n, k;
vi arr;
ll dp[10000][2500][2];
ll f(int at, int segments, int taken){
	if(at >= n)
		return 0;
	if(dp[at][segments][taken] != -1)
		return dp[at][segments][taken];
		
	ll best = 0;
	best = max(best, arr[at] + f(at + 1, segments, 1));
	if(taken == 0)
		best = max(best, f(at + 1, segments, 0));
	if(segments + 1 < k && taken == 1)
		best = max(best, f(at + 1, segments + 1, 0));
	return dp[at][segments][taken] = best;
}
int main(){
	cin>>n>>k;
	for(int i = 0; i < n; i++){
		int a;
		cin>>a;
		arr.pb(a);
	}
	if(n > 2500 || k > 2500)
	{
		cout<<-1<<endl;
		return 0;
	}
	memset(dp, -1, sizeof(dp));
	cout<<f(0, 0,0)<<endl;
}

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