제출 #1124817

#제출 시각아이디문제언어결과실행 시간메모리
1124817wzhci11Stove (JOI18_stove)C++17
100 / 100
16 ms1096 KiB
#include <bits/stdc++.h>
using namespace std;
#define ll long long
int main() {
    ios::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
    ll n, k, a, b, ans = 0;
    cin >> n >> k;
    vector<ll> t(n-1);
    cin >> a;
    for (ll i = 0; i < n-1; ++i) {
        cin >> b;
        t[i] = b - a - 1;
        a = b;
    }
    sort(t.begin(), t.end());
    for (ll i = 0; i < n - k; ++i) {
        ans += t[i];
    }
    cout << ans + n;
}
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