#include <bits/stdc++.h>
using namespace std;
const long long N = 1e5 + 10, M = 100 + 10, inf = 1e9 + 100;
long long n, k, a[N], dp[N][M], dp2[N];
struct node {
long long mini, lazy;
} seg[N << 2];
void build(long long l, long long r, long long t, long long id) {
seg[id].lazy = 0;
if (r - l == 1) {
seg[id].mini = dp[l][t];
return;
}
long long mid = (l + r) / 2;
build(l, mid, t, id << 1), build(mid, r, t, id << 1 | 1);
seg[id].mini = min(seg[id << 1].mini, seg[id << 1 | 1].mini);
}
void shift(long long id) {
seg[id << 1].mini += seg[id].lazy, seg[id << 1 | 1].mini += seg[id].lazy;
seg[id << 1].lazy += seg[id].lazy, seg[id << 1 | 1].lazy += seg[id].lazy;
seg[id].lazy = 0;
}
void add(long long l1, long long r1, long long l2, long long r2, long long v, long long id) {
if (l1 >= r2 || r1 <= l2) return;
if (l1 >= l2 && r1 <= r2) {
seg[id].mini += v, seg[id].lazy += v;
return;
}
shift(id);
long long mid = (l1 + r1) / 2;
add(l1, mid, l2, r2, v, id << 1), add(mid, r1, l2, r2, v, id << 1 | 1);
seg[id].mini = min(seg[id << 1].mini, seg[id << 1 | 1].mini);
}
long long get(long long l1, long long r1, long long l2, long long r2, long long id) {
if (l1 >= r2 || r1 <= l2) return inf;
if (l1 >= l2 && r1 <= r2) return seg[id].mini;
shift(id);
long long mid = (l1 + r1) / 2;
return min(get(l1, mid, l2, r2, id << 1), get(mid, r1, l2, r2, id << 1 | 1));
}
void input() {
cin >> n >> k;
for (long long i = 0; i < n; i++)
cin >> a[i];
}
void solve() {
for (long long i = 0; i < n; i++) {
dp2[i] = i - 1;
while (dp2[i] > -1 && a[dp2[i]] <= a[i])
dp2[i] = dp2[dp2[i]];
}
memset(dp, 63, sizeof dp);
long long tmp = 0;
for (long long i = 0; i < n; i++) {
tmp = max(tmp, a[i]);
dp[i][1] = tmp;
}
for (long long j = 2; j <= k; j++) {
build(0, n, j - 1, 1);
for (long long i = 0; i < n; i++) {
add(0, n, i, i + 1, a[i], 1);
long long p = i - 1;
while (p > -1 && a[p] < a[i]) {
add(0, n, dp2[p] + 1, p + 1, a[i] - a[p], 1);
p = dp2[p];
}
dp[i][j] = get(0, n, 0, i, 1);
}
}
cout << dp[n - 1][k];
}
int main() {
ios:: sync_with_stdio(0), cin.tie(0), cout.tie(0);
input();
solve();
}
