Submission #654139

#	Time	Username	Problem	Language	Result	Execution time	Memory
654139		lunchbox1	Stove (JOI18_stove)	C++17	100 / 100	24 ms	1620 KiB

stove

/*
 author: lunchbox
 problem link: https://oj.uz/problem/view/JOI18_stove
*/
#include <bits/stdc++.h>
using namespace std;

int main() {
 ios::sync_with_stdio(0), cin.tie(0);
 int n, k; cin >> n >> k;
 vector<int> a(n);
 for (int& x : a) cin >> x;
 int ans = a.back() - a[0] + 1;
 for (int i = 0; i < n - 1; i++)
  a[i] = a[i + 1] - a[i];
 a.pop_back();
 sort(a.rbegin(), a.rend());
 for (int i = 0; i < k - 1; i++) ans -= a[i] - 1;
 cout << ans << '\n';
 return 0;
}

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