#include <bits/stdc++.h>
using namespace std;
#define int long long
#define rep(i,a,b) for(int i = a; i <= b; i++)
#define per(i,a,b) for(int i = a; i >= b; i--)
#define pii pair<int,int>
#define pb push_back
#define fi first
#define se second
const int MAXN = 2e3+10;
const int INF = 1e18+10;
int dp[MAXN][MAXN], a[MAXN];
int32_t main() {
ios_base::sync_with_stdio(0); cin.tie(nullptr);
int n,k;cin >> n >> k;
rep(i,1,n) cin >> a[i];
rep(i,1,n) {
rep(j,1,k) {
dp[i][j] = dp[i-1][j];
int s = 0;
per(l,i,1) {
s+=a[l];
dp[i][j] = max(dp[i][j], dp[l-1][j-1] + s);
}
}
}
cout << dp[n][k] << '\n';
return 0;
}
