Submission #1290072

#	Time	Username	Problem	Language	Result	Execution time	Memory
1290072		lucaskojima	Stove (JOI18_stove)	C++17	100 / 100	14 ms	1484 KiB

stove

#include "bits/stdc++.h"
#define sz(x) (int)size(x)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)

using namespace std;
using ll = long long;
using pii = pair<int, int>;

const char nl = '\n';
const int INF = 0x3f3f3f3f;
const ll LINF = 0x3f3f3f3f3f3f3f3f;

int32_t main() {
  ios::sync_with_stdio(0), cin.tie(0);

  int n, k; cin >> n >> k;
  vector<int> a(n); for (auto &x : a) cin >> x;

  vector<int> v;
  for (int i = 1; i < n; i++)
    v.push_back(a[i] - a[i - 1]);

  sort(all(v));

  ll ans = k;
  for (int i = 0; i < n - k; i++)
    ans += v[i];

  cout << ans << nl;
  return 0;
}

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