Submission #1033688

#	Time	Username	Problem	Language	Result	Execution time	Memory
1033688		vjudge1	Stove (JOI18_stove)	C++17	100 / 100	14 ms	2140 KiB

stove

#include<bits/stdc++.h>

using namespace std;
#define int long long
int n, a[100005], k;
void solve() {
    cin >> n >> k;
    vector<int> v;
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        if(i > 1) v.push_back(a[i]-a[i-1]);
    }
    int res = a[n]-a[1]+k;
    sort(v.begin(), v.end(), greater<>());
    k--;
    for (int i = 0; i < k; i++) res -= v[i];
    cout << res;
}

signed main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int t = 1;
    // cin >> t;
    while(t--) {
        solve();
    }
}

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