#include <bits/stdc++.h>
using namespace std;
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
int n, k;
cin >> n >> k;
vector<long long> a(n + 1);
for(int i = 1; i <= n; ++i){
cin >> a[i];
}
vector<long long> dp(n + 1, 0);
for(int j = 1; j <= k; ++j){
vector<long long> dp_curr(n + 1, LLONG_MIN);
long long max_val = LLONG_MIN;
long long curr_sum = 0;
int start = 0;
curr_sum = 0;
for(int i = 1; i <= n; ++i){
curr_sum += a[i];
max_val = max(max_val, dp[i - 1] - curr_sum + a[i]);
dp_curr[i] = max(dp_curr[i - 1], max_val + curr_sum);
}
dp = dp_curr;
}
cout << dp[n];
return 0;
}
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