Submission #931949

#	Time	Username	Problem	Language	Result	Execution time	Memory
931949		hlk28khuong	Stove (JOI18_stove)	C++17	100 / 100	18 ms	4700 KiB

stove

#include <bits/stdc++.h>

using namespace std;
#define int long long
#define isz(a) ((int)(a.size()))
const int mxn=1e6+7;
int a[mxn];
vector<int>val;
int n,k;
signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin>>n>>k;
    k--;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
        if(i!=1)
            val.push_back(a[i]-a[i-1]-1);
    }
    sort(val.begin(),val.end(),greater<int>());
    int res=a[n]-a[1]+1;
    for(int i=0;i<min(k,isz(val));i++)
    {
        res-=val[i];
    }
    cout<<res;
    return 0;
}

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