제출 #383072

#제출 시각아이디문제언어결과실행 시간메모리
383072MODDIStove (JOI18_stove)C++14
100 / 100
54 ms2156 KiB
#include <bits/stdc++.h>
using namespace std;
#define ll long long
signed main(){
    ll n, k; cin >> n >> k;
    ll diff[n-1], x, y; 
	cin >> x;
    for(int i=0; i<n-1; ++i){
    	cin >> y;
    	diff[i] = y-x-1;
    	x = y;
    }
    sort(diff, diff+n);
    ll ans = 0;
    for(int i=0; i<n-k; ++i) ans += diff[i];
    cout << ans+n;
}
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