Submission #796498

#	Time	Username	Problem	Language	Result	Execution time	Memory
796498		vjudge1	Cover (COCI18_cover)	C++17	120 / 120	25 ms	524 KiB

cover

#include<bits/stdc++.h>
#pragma GCC optimize("Ofast,unroll-loops")
//#pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma,tune=native")
#define pii pair<int, int>
#define fi first
#define se second
#define pb push_back
#define int long long
//#define ld long double
using namespace std;
using ll=long long;
const int inf = 2e18;
const int MN = 5e3+5;
const int mod=998244353;
int n;
pii a[MN];
int dp[MN];
inline void solve() {
	cin>>n;
	for (int i=1; i<=n; i++) {
		cin>>a[i].fi>>a[i].se;
		a[i].fi=abs(a[i].fi);
		a[i].se=abs(a[i].se);
	}
	sort(a+1,a+n+1);
//	build(1,1,n);
	for (int i=1; i<=n; i++) dp[i]=inf;
	
	for (int i=1; i<=n; i++) {
		int mx=-inf, mn=inf;
		for (int j=i; j>=1; j--) {
			mx=max(mx,a[j].se);
			mn=min(mn,a[j].se);
			dp[i]=min(dp[i],dp[j-1]+a[i].fi*2*mx*2);
		}
	}
	cout<<dp[n];
}
signed main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int t=1;
//	preprocess();
//	cin>>t;
	while(t--) {
		solve();
	}	
}

• Subtask 1: 120 / 120