Submission #1303122

#	Time	Username	Problem	Language	Result	Execution time	Memory
1303122		aaaaaaaa	Building Bridges (CEOI17_building)	C++20	30 / 100	3093 ms	2768 KiB

building

#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(nullptr); cout.tie(nullptr);
    int n;
    cin >> n;
    vector<int> h(n + 1, 0), w(n + 1, 0);
    for(int i = 1; i <= n; ++i){
        cin >> h[i];
    }
    for(int i = 1; i <= n; ++i){
        cin >> w[i];
        w[i] += w[i - 1];
    }
    vector<int> dp(n + 5, 0);
    auto cost = [&](int i, int j) -> int {
        return (h[i] - h[j]) * (h[i] - h[j]) + w[j - 1] - w[i];
    };
    for(int i = 2; i <= n; ++i){
        dp[i] = cost(1, i);
    }
    for(int i = 1; i <= n; ++i){
        for(int j = i - 1; j >= 1; --j){
            dp[i] = min(dp[i], dp[j] + cost(j, i));
        }
    }
    cout << dp[n] << "\n";
    return 0;
}

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