Submission #335369

#	Time	Username	Problem	Language	Result	Execution time	Memory
335369		AQT	Stove (JOI18_stove)	C++17	100 / 100	27 ms	2048 KiB

stove

#include <bits/stdc++.h>

using namespace std;

int N, K;
int arr[100005];
int dif[100005];

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin >> N >> K;
	for(int i = 1; i<=N; i++){
		cin >> arr[i];
		dif[i-1] = arr[i] - arr[i-1];
	}
	sort(dif+1, dif+N);
	K = N - K;
	int ans = 0;
	for(int i = 1; i<=K; i++){
		ans += dif[i];
	}
	cout << ans+ N - K << "\n";
}

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50