Submission #1122758

#	Time	Username	Problem	Language	Result	Execution time	Memory
1122758		Chinguun	K blocks (IZhO14_blocks)	C++20	53 / 100	16 ms	2376 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, mn = oo, a[N];
bool vis[101][101];
int dp[101][101];
int mx[101][101];
int pre[101];

void build() {
	pre[0] = 0;
	for (int i = 1; i <= n; i++) {
		mx[i][i] = a[i];
		pre[i] = pre[i - 1] + a[i];
		for (int j = i + 1; j <= n; j++) {
			mx[i][j] = max(mx[i][j - 1], a[j]);
		}
	}
}

int solve(int i, int j) {
	if (i == j) return pre[i];
	if (i < j) return oo;
	if (j == 1) return mx[1][i];
	if (vis[i][j]) return dp[i][j];
	vis[i][j] = 1;
	dp[i][j] = oo;
	for (int x = i - 1; x >= 0; x--) {
		dp[i][j] = min(dp[i][j], solve(x, j - 1) + mx[x + 1][i]);
	}
	return dp[i][j];
}

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];
	}
	build();
	cout << solve(n, k) << endl;
	return 0;
}

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