Submission #1241935

#	Time	Username	Problem	Language	Result	Execution time	Memory
1241935		nasufyro	Stove (JOI18_stove)	C++20	100 / 100	19 ms	2388 KiB

stove

#include <bits/stdc++.h>
using namespace std;
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    long long n, k;
    cin >> n >> k;
    vector<long long> a(n+1);
    for (long long i = 1; i <= n; i++)
    {
        cin >> a[i];
    }
    vector<long long> diff;
    for (long long i = 2; i <= n; i++) {
        diff.push_back(a[i] - a[i-1]);
    }
    sort(diff.begin(), diff.end());
    long long sum = n;
    for (long long i = 0; i < n - k; i++) {
        sum += diff[i] - 1;
    }
    cout << sum;
    return 0;
}

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