Submission #709998

#	Time	Username	Problem	Language	Result	Execution time	Memory
709998		Darren0724	Cake 3 (JOI19_cake3)	C++17	5 / 100	4072 ms	360 KiB

cake3

#include<bits/stdc++.h>
using namespace std;
#define all(x) x.begin(),x.end()
#define int long long
#define x first
#define y second
const int INF=1e18;
int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n,m;cin>>n>>m;
    vector<pair<int,int>> v(n);
    for(int i=0;i<n;i++){
        cin>>v[i].y>>v[i].x;
    }
    sort(v.begin(),v.end());
    int ans1=-INF;
    for(int i=0;i<n;i++){
        for(int j=i+m;j<=n;j++){
            vector<int> p;
            for(int k=i;k<j;k++){
                p.push_back(v[k].y);
            }
            sort(all(p),greater<>());
            int ans=0;
            for(int k=0;k<m;k++){
                ans+=p[k];
            }
            ans-=(v[j-1].x-v[i].x)*2;
            //cout<<i<<' '<<j<<' '<<ans<<endl;
            ans1=max(ans1,ans);
        }
    }
    cout<<ans1<<endl;
    return 0;
}

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