Submission #939138

#	Time	Username	Problem	Language	Result	Execution time	Memory
939138		vjudge1	Stove (JOI18_stove)	C++17	100 / 100	18 ms	2272 KiB

stove

#include<bits/stdc++.h>

using namespace std;

const int N = (int)1e5+7;
const long long INF = (long long)1e18+7;

int n, k, a[N];
vector<int> b;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> n >> k;
    for(int i = 1; i <= n; ++i) {
    	cin >> a[i];
    } 
    int ans = a[n]-a[1];
	for(int i = 2; i <= n; ++i) {
		b.push_back(a[i]-a[i-1]);
	}
	k--;
	sort(b.rbegin(), b.rend());
	for(int i = 0; i < k; ++i) {
		ans -= b[i];
	}
	cout << ans+k+1;
    return 0;
}                   

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