제출 #1344599

#제출 시각아이디문제언어결과실행 시간메모리
1344599orionarafStove (JOI18_stove)C++20
100 / 100
11 ms2384 KiB
#include<bits/stdc++.h>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    long long N, K;
    cin >> N >> K;

    vector<long long> T(N);
    for (int i = 0; i < N; i++) cin >> T[i];

    vector<long long> gaps;
    for (int i = 0; i + 1 < N; i++)
        gaps.push_back(T[i+1] - T[i] - 1);

    sort(gaps.begin(), gaps.end());

    long long ans = N;
    for (int i = 0; i < N - K; i++)
        ans += gaps[i];

    cout << ans << "\n";
    return 0;
}
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