Submission #894639

#	Time	Username	Problem	Language	Result	Execution time	Memory
894639		IWKR	Stove (JOI18_stove)	C++17	100 / 100	19 ms	3148 KiB

stove

#include <bits/stdc++.h>
using namespace std;

#define int long long

int arr[100000];

int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int n, k;
    cin >> n >> k;
    vector<int> v;
    for (int i = 0; i < n; i++) {
        cin >> arr[i];
        if (i != 0) {
            v.push_back(arr[i] - arr[i - 1]);
        }
    }
    sort(v.begin(), v.end());
    int ans = 0;
    int left = n - k;
    for (int i = 0; i < left; i++) {
        ans += v[i] - 1;
    }
    cout << n + ans;
}

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