#include <bits/stdc++.h>
using namespace std;
const int md = 1000000007;
const int maxn = 30303;
const int maxk = 220;
const int maxn4 = 4 * maxn;
const long long inf = 2020202020202020202LL;
int n, k, a[maxn];
int ans[maxn][maxk], ansp[maxn][maxk], ansm[maxn][maxk], t1, t2, t3, t4, t5, t6;
int main() {
  ios::ios_base::sync_with_stdio(false);
  cin >> n >> k;
  for (int i = 0; i < n; i++) cin >> a[i + 1];
  int mx = -md, mn = -md;
  for (int i = 0; i < maxn; i++)
    for (int j = 0; j < maxk; j++) {
      ansp[i][j] = -md;
      ansm[i][j] = -md;
      ans[i][j] = -md;
    }
  for (int i = 1; i <= n; i++) {
    mx = max(mx + a[i], a[i]);
    ansp[i][1] = mx;
    mn = max(mn - a[i], -a[i]);
    ansm[i][1] = mn;
  }
  for (int w = 2; w <= k; w++) {
    t1 = ansp[w - 1][w - 1];
    t2 = ansm[w - 1][w - 1];
    t3 = ansm[w - 1][w - 1];
    t4 = ansp[w - 1][w - 1];
    t5 = ansm[w - 1][w - 1];
    t6 = ansp[w - 1][w - 1];
    for (int i = w; i <= n; i++) {
      ans[i][w] = max(t5 + a[i], t6 - a[i]);
      ansp[i][w] = max(t1, t3 + 2 * a[i]);
      ansm[i][w] = max(t2, t4 - 2 * a[i]);
      t1 = max(t1, ansp[i][w - 1]);
      t2 = max(t2, ansm[i][w - 1]);
      t3 = max(t3 + 2 * a[i], ansm[i][w - 1]);
      t4 = max(t4 - 2 * a[i], ansp[i][w - 1]);
      t5 = max(t5 + a[i], ansm[i][w - 1]);
      t6 = max(t6 - a[i], ansp[i][w - 1]);
    }
  }
  int an = -md;
  for (int i = 1; i <= n; i++) an = max(an, ans[i][k]);
  cout << an;
  return 0;
}
