Submission #1097631

#	Time	Username	Problem	Language	Result	Execution time	Memory
1097631		sax	Stove (JOI18_stove)	C++17	100 / 100	33 ms	2356 KiB

stove

#include <bits/stdc++.h>
#define int long long
///#define pragma GCC optimise("O3")

using namespace std;

signed main()
{
    int n, k; cin>>n>>k;
    vector <int> dif;
    int aux=0, all=0;
    for (int i=1; i<=n; i++)
    {
        int a; cin>>a;
        if (i>1) dif.push_back(a-aux);
        if (i==1) all=a;
        if (i==n) all=a+1-all;
        aux=a+1;
    }

    sort(dif.begin(), dif.end(), greater<int>());

    k--;
    for (auto x:dif)
    {
        if (k==0) break;
        k--;
        all-=x;
    }
    cout<<all<<endl;
    return 0;
}

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