제출 #590991

#제출 시각아이디문제언어결과실행 시간메모리
590991piOOEStove (JOI18_stove)C++17
100 / 100
20 ms2120 KiB
#include <bits/stdc++.h>

using namespace std;

using ll = long long;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, k;
    cin >> n >> k;
    vector<int> t(n);
    for (int i = 0; i < n; ++i)
        cin >> t[i];
    vector<int> v(n - 1);
    for (int i = 0; i < n - 1; ++i)
        v[i] = t[i + 1] - t[i];
    sort(v.begin(), v.end());
    int ans = t[n - 1] - t[0] + 1;
    for (int i = n - 2; i >= n - k; --i) {
        ans -= v[i] - 1;
    }
    cout << ans;
    return 0;
}
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