Submission #1112003

#	Time	Username	Problem	Language	Result	Execution time	Memory
1112003		Aviansh	Building Bridges (CEOI17_building)	C++17	30 / 100	3070 ms	3408 KiB

building

#include <bits/stdc++.h>

using namespace std;

long long inf = 2e18;

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    long long n;
    cin >> n;
    long long arr[n];
    for(long long &i : arr){
        cin >> i;
    }
    long long w[n];
    for(long long &i : w){
        cin >> i;
    }
    long long dp[n];
    dp[0]=0;
    dp[1]=arr[0]*arr[0]+arr[1]*arr[1]-2*arr[0]*arr[1];
    long long pref[n];
    pref[0]=w[0];
    for(int i = 1;i<n;i++){
        pref[i]=pref[i-1]+w[i];
    }
    for(long long i = 2;i<n;i++){
        long long sm = 0;
        dp[i]=inf;
        for(long long j = i-1;j>=0;j--){
            dp[i]=min(dp[i],dp[j]+pref[i-1]-pref[j]+arr[i]*arr[i]+arr[j]*arr[j]-2*arr[i]*arr[j]);
            sm+=w[j];
        }
    }
    cout << dp[n-1];
    return 0;
}

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