Submission #786900

#	Time	Username	Problem	Language	Result	Execution time	Memory
786900		Dan4Life	Cake 3 (JOI19_cake3)	C++17	24 / 100	65 ms	5616 KiB

cake3

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define sz(a) (int)a.size()
#define all(a) begin(a),end(a)
const int mxN = (int)1e5+10;
int n, m;
array<int,2> a[mxN];
int32_t main()
{
	cin >> n >> m; int ans = -1e18;
	for(int i = 0; i < n; i++) cin >> a[i][1] >> a[i][0];
	sort(a,a+n); int sum = 0;
	for(int i = 0; i < n; i++){
		priority_queue<int,vector<int>,greater<int>> pq = 
		priority_queue<int,vector<int>,greater<int>>(); sum = 0;
		for(int j = i+1; j < n; j++){
			int cost = a[i][1]+a[j][1]-2*(a[j][0]-a[i][0]);
			if(sz(pq)==m-2) ans = max(ans, sum+cost);
			pq.push(a[j][1]); sum+=a[j][1];
			if(sz(pq)>m-2) sum-=pq.top(), pq.pop();
		}
	}
	cout << ans << "\n";
}

• Subtask 1: 5 / 5
• Subtask 2: 19 / 19
• Subtask 3: 0 / 76