This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <iostream>
#include <algorithm>
#include <vector>
#include <cmath>
#include <set>
#include <map>
#include <iomanip>
#include <cassert>
#include <stack>
#include <queue>
#include <deque>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>-
using namespace std;
//using namespace __gnu_pbds;
typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
// template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
// order_of_key (k) : Number of items strictly smaller than k .
// find_by_order(k) : K-th element in a set (counting from zero).
#define sz(a) (int)a.size()
#define all(a) a.begin(), a.end()
#define pb push_back
#define ppb pop_back
#define mkp make_pair
#define F first
#define S second
#define lb lower_bound
#define ub upper_bound
#define show(a) cerr << #a <<" -> "<< a <<" "
#define nl cerr <<"\n"
//#define int ll
const int N = 105;
const int oo = 1e9 + 5;
int n, k, dp[N][N][N], a[N];
void solve() {
cin >> n >> k;
for (int i = 1; i <= n; ++i) {
cin >> a[i];
}
for (int i = 1; i <= n; ++i) {
for (int j = i; j <= n; ++j) {
for (int l = 1; l <= k; ++l) {
dp[i][j][l] = oo;
}
}
}
for (int i = 1; i <= n; ++i) {
for (int j = i; j <= n; ++j) {
int mx = 0;
for (int l = i; l <= j; ++l) { mx = max(mx, a[l]); }
dp[i][j][1] = mx;
}
}
for (int len = 2; len <= n; ++len) {
for (int l = 1; l + len - 1 <= n; ++l) {
int r = l + len - 1;
for (int i = 2; i <= min(len, k); ++i) {
for (int j = l; j < r; ++j) {
for (int o = 1; o < i; ++o) {
dp[l][r][i] = min(dp[l][r][i], dp[l][j][o] + dp[j+1][r][i-o]);
}
}
}
}
}
cout << dp[1][n][k];
}
main () {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int tests = 1;
//cin >> tests;
while (tests --) {
solve();
}
return 0;
}
/*
Just Chalish!
*/
Compilation message (stderr)
blocks.cpp:77:8: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
77 | main () {
| ^
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