Submission #1286285

#	Time	Username	Problem	Language	Result	Execution time	Memory
1286285		juan_alejandro	Stove (JOI18_stove)	C++20	50 / 100	1095 ms	1100 KiB

stove

#include <bits/stdc++.h>
#define endl '\n'
#define int long long
#pragma GCC optimize("O2")
using namespace std;
int32_t main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cout.precision(0);
    cout<<fixed;
    int n,k;
    cin>>n>>k;
    vector<int> x(n);
    for (int i = 0; i < n; i++)
    {
        cin>>x[i];
    }
    vector<int> dp(k);
    int res=x[n-1]+1-x[0];
    vector<bool> vis(n,false);
    //cout<<res<<endl;
    for (int j = 2; j <= k; j++)
    {
        int mx=-1,idx;
        for (int i = 1; i < n; i++)
        {
            if(vis[i])continue;
            if(x[i]-x[i-1]>mx)
            {
                mx=x[i]-x[i-1];
                idx=i;
            }
        }
        vis[idx]=true;
        res-=mx-1;
        //cout<<"for k:"<<res<<endl;
    }
    cout<<res<<endl;
    return 0;
}

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 0 / 50