Submission #1126476

#	Time	Username	Problem	Language	Result	Execution time	Memory
1126476		vladilius	Building Bridges (CEOI17_building)	C++20	30 / 100	3091 ms	2628 KiB

building

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second
const ll inf = numeric_limits<ll> :: max();

int main(){
    ios_base::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++){
        cin>>h[i];
    }
    vector<ll> p(n + 1);
    for (int i = 1; i <= n; i++){
        cin>>w[i];
        p[i] = p[i - 1] + w[i];
    }
    
    auto sum = [&](int l, int r){
        return p[r] - p[l - 1];
    };
    
    auto sq = [&](int x){
        return 1LL * x * x;
    };
    
    vector<ll> dp(n + 1);
    for (int i = 2; i <= n; i++){
        dp[i] = inf;
        for (int j = 1; j < i; j++){
            dp[i] = min(dp[i], dp[j] + sum(j + 1, i - 1) + sq(h[i] - h[j]));
        }
    }
    cout<<dp[n]<<"\n";
}

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