#include <iostream>
#include <vector>
#include <set>
#include <deque>
using namespace std;
/*
Add a[i]*a[j] to the score if i and j are in different parts.
dp[i][p] = maximum score if 1..i is split into p parts
dp[i][p] = max{dp[j][p-1] + (a_sum[i] - a_sum[j])*(a_sum[j]) | j=1..i-1}
dp[i][p] = max{(-a_sum[j])*a_sum[i] + (dp[j][p-1] + a_sum[j]*a_sum[j]) | j=1..i-1}
*/
long long INF = 1'000'000'000'000'000'000;
int main()
{
int n, k;
cin >> n >> k;
long long a[n+1], a_sum[n+1];
a_sum[0] = 0;
for(int i = 1; i <= n; i++)
{
cin >> a[i];
a_sum[i] = a_sum[i-1] + a[i];
}
long long dp[n+1];
int prev[n+1];
int cut_count[n+1];
long long lo = 0, hi = INF/k - 10;
dp[0] = prev[0] = cut_count[0] = 0;
dp[1] = prev[1] = cut_count[1] = 0;
while(1)
{
long long ct = (lo+hi)/2;
for(int i = 2; i <= n; i++)
{
dp[i] = 0;
prev[i] = 0;
cut_count[i] = 0;
for(int j = 1; j < i; j++)
{
if(dp[j] + (a_sum[i] - a_sum[j])*a_sum[j] - ct > dp[i])
{
dp[i] = dp[j] + (a_sum[i] - a_sum[j])*a_sum[j] - ct;
prev[i] = j;
cut_count[i] = cut_count[j] + 1;
}
else if(dp[j] + (a_sum[i] - a_sum[j])*a_sum[j] - ct == dp[i])
{
if(cut_count[j] + 1 < cut_count[i])
{
prev[i] = j;
cut_count[i] = cut_count[j] + 1;
}
}
}
}
if(lo == hi)
{
break;
}
else
{
if(cut_count[n] > k) lo = ct+1;
else hi = ct;
}
}
cout << dp[n] + k*lo << '\n';
bool res[n + 1];
int resSize = 0;
for(int i = 0; i <= n; i++) res[i] = false;
for(int i = n; prev[i] != 0; i = prev[i]) {
res[prev[i]] = true;
resSize++;
}
for(int i = 1; i + 2 <= n && resSize < k; i++) {
if (res[i] && a[i + 1] == 0 && !res[i + 1]) {
res[i + 1] = true;
resSize++;
}
}
for(int i = n - 1; i >= 1 && resSize < k; i--) {
if (res[i] && a[i] == 0 && !res[i-1]) {
res[i-1] = true;
resSize++;
}
}
}
