Submission #411104

#	Time	Username	Problem	Language	Result	Execution time	Memory
411104		Blagojce	Building Bridges (CEOI17_building)	C++11	30 / 100	3043 ms	3896 KiB

building

#include <bits/stdc++.h>
#define fr(i, n, m) for(int i = (n); i < (m); i ++)
#define pb push_back
#define st first
#define nd second
#define pq priority_queue
#define all(x) begin(x), end(x)


using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
const int i_inf = 1e9;
const ll inf = 1e18;
const ll mod = 1e9+7;
const ld eps = 1e-13;
const ld pi  = 3.14159265359;

mt19937 _rand(time(NULL));
clock_t z;

const int mxn = 2e5+5;

int n;
ll h[mxn];
ll w[mxn];

ll dp[mxn];

ll pref[mxn];

ll p(ll a){
	return a*a;
}

void solve(){
	cin >> n;
	fr(i, 0, n){
		cin >> h[i];
	}
	fr(i, 0, n){
		cin >> w[i];
	}
	pref[0] = w[0];
	fr(i, 1, n){
		pref[i] = pref[i-1]+w[i];
	}
	dp[0] = 0;
	fr(i, 1, n){
		dp[i] = inf;
		fr(j, 0, i){
			dp[i] = min(dp[i], dp[j] + (pref[i] - pref[j] - w[i]) + p(h[i]-h[j]));
		
		}
	}
	cout<<dp[n-1]<<endl;
	
	
	
	
	
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	solve();

}

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