Submission #1123437

#	Time	Username	Problem	Language	Result	Execution time	Memory
1123437		Chinguun	K blocks (IZhO14_blocks)	C++20	0 / 100	0 ms	328 KiB

blocks

#include <bits/stdc++.h>
using namespace std;

#define int long long
#define ff first
#define ss second
#define pb push_back
#define meta int tm = (tl + tr) / 2, x = i * 2 + 1, y = x + 1

const int N = 2e5 + 7;
const int oo = 1e9;
const int mod = 1e9 + 7;

typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<pii> vii;

int n, k, a[N], pre[N], dp[107][N], mx;

signed main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);

	cin >> n >> k;
	for (int i = 1; i <= n; i++) {
		cin >> a[i];
		pre[i] = pre[i - 1] + a[i];
	}
	for (int i = 1; i <= k; i++) {
		mx = a[i];
		dp[i][i] = pre[i];
		for (int j = i + 1; j <= n; j++) {
			int x = dp[i - 1][j] + a[j];
			int y = dp[i][j - 1] - ((mx <= a[j]) * (mx - a[j]));
			if (x < y) mx = a[j];
			else mx = max (mx, a[j]);
			dp[i][j] = min (x, y);
			mx = max (mx, a[j]);
		}
	}
	cout << dp[k][n];
	return 0;
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 18
• Subtask 3: 0 / 21
• Subtask 4: 0 / 47