제출 #1116452

#제출 시각아이디문제언어결과실행 시간메모리
1116452heeyStove (JOI18_stove)C++14
0 / 100
1 ms336 KiB
#include<bits/stdc++.h>
using namespace std;
#define int long long

signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    int n, k; cin >> n >> k;
    vector<int> t(n);

    for(int i = 0; i < n; i++) cin >> t[i];

    vector<int> df(n-1);
    for(int i = 1; i < n; i++) df[i] = t[i] - t[i-1] - 1;

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

    int res = 0;
    for(int i = 0; i <= n - k; i++){
        res += df[i];
    }
    cout << n + res << '\n';
    return 0;
}
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