Submission #892677

#	Time	Username	Problem	Language	Result	Execution time	Memory
892677		tvladm2009	Building Bridges (CEOI17_building)	C++17	30 / 100	3010 ms	2648 KiB

building

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()

const ll INF = 1e18;

int32_t main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin >> n;
    vector<int> h(n + 1), w(n + 1);
    for (int i = 1; i <= n; i += 1) {
        cin >> h[i];
    }
    vector<ll> pref(n + 1, 0);
    for (int i = 1; i <= n; i += 1) {
        cin >> w[i];
        pref[i] = pref[i - 1] + w[i];
    }
    vector<ll> dp(n + 1, INF);
    dp[1] = 0;
    for (int i = 2; i <= n; i += 1) {
        for (int j = 1; j < i; j += 1) {
            dp[i] = min(dp[i], h[i] * -2 * h[j] + (dp[j] + h[j] * h[j] - pref[j]));
        }
        dp[i] += pref[i - 1] + h[i] * h[i];
    }
    cout << dp[n] << endl;
    return 0;
}

• Subtask 1: 30 / 30
• Subtask 2: 0 / 30
• Subtask 3: 0 / 40