제출 #964170

#제출 시각아이디문제언어결과실행 시간메모리
964170melStove (JOI18_stove)C++14
100 / 100
44 ms2928 KiB
#include <iostream>
using namespace std;
#include <algorithm>
#define int long long

int arr[100005];
int dif[100005];

signed main() {
        int n; cin >> n;
        int k; cin >> k;
        for (int i =0; i<n; i++){
                cin >> arr[i];
        }
        sort(arr, arr+n);
        for(int i = 0;i<(n-1);i++){
                dif[i] = arr[i+1]-arr[i];
        }
        sort(dif, dif+(n-1));
        if (k>=n) {
                cout << n;
        } else {
                int cnt = k;

                for (int i = 0; i<(n-k); i++) {
                        cnt+= dif[i];
                }
                cout << cnt;
        }
}
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