Submission #1228751

#	Time	Username	Problem	Language	Result	Execution time	Memory
1228751		ngu	Stove (JOI18_stove)	C++20	0 / 100	1 ms	1096 KiB

stove

#include<bits/stdc++.h>
#define int long long
#define fi first
#define se second

using namespace std;

int const MOD = 1e9 + 7, N = 1e5 + 4;

int n, k, a[N];

signed main(){
	cin.tie(0)->sync_with_stdio(0);
	cin >> n >> k;
	for(int i = 1; i <= n; i++) cin >> a[i];
	int s[N];
	int mag = a[n] + 1 - a[1];
	//cout << mag << "\n";
	for(int i = 1; i < n; i++){
		s[i] = a[i + 1] - 1 - a[i];
		//cout << i << ":" << s[i] << "\n";
	}
	s[n] = 1;
	sort(s + 1, s + n + 1);
	int cuoi = n;
	for(int i = 1; i < k; i++){
		mag -= s[cuoi];
		cuoi--;
	}
	cout << mag;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50