제출 #1262394

#제출 시각아이디문제언어결과실행 시간메모리
1262394chikien2009Stove (JOI18_stove)C++20
100 / 100
12 ms1096 KiB
#include <bits/stdc++.h>

using namespace std;

void setup()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}

int n, k, a[100000], b[100000], res;

int main()
{
    setup();

    cin >> n >> k >> a[0];
    res = n;
    for (int i = 1; i < n; ++i)
    {
        cin >> a[i];
        b[i - 1] = a[i] - a[i - 1] - 1;
    }
    sort(b, b + n - 1);
    for (int i = 0; i < n - k; ++i)
    {
        res += b[i];
    }
    cout << res;
    return 0;
}
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