Submission #127330

#	Time	Username	Problem	Language	Result	Execution time	Memory
127330		souhhcong	Stove (JOI18_stove)	C++14	100 / 100	90 ms	1152 KiB

stove

#include <iostream>
#include <algorithm>
using namespace std;

const int N = 1e5+5;
int n, k;
int a[N];
int diff[N], ans;

int main()
{
    cin >> n >> k;
    for(int i = 0; i < n; i++)
    {
        cin >> a[i];
        if (i != 0)
        {
            diff[i-1] = a[i]-a[i-1]-1;
        }
    }
    sort(diff,diff+n,greater<int>());
    ans = a[n-1]-a[0]+1;
    for (int i = 0; i < k-1; i++)
    {
        if (i >= n)
            break;
        ans -= diff[i];
    }
    cout << ans;
}

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