Submission #678035

#	Time	Username	Problem	Language	Result	Execution time	Memory
678035		vjudge1	Stove (JOI18_stove)	C++17	0 / 100	0 ms	212 KiB

stove

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
    ll a[100005];
void solve() {
    ll n, k;
    cin >> n >> k;
    if(k == n) {
        cout << n << '\n';
        return;
    }
    for(int i = 1; i <= n; i++) {
        cin >> a[i];
    }
    vector <ll> v;
    for(int i = 2; i <= n; i++) {
        v.push_back(a[i] - a[i - 1] + 1);
    }
    sort(v.begin(), v.end());
    ll sum = 0;
    for(int i = 0; i < n - k; i++) {
        sum += v[i];
    }
    cout << sum << '\n';
}
int main() {
    //freopen("success.in", "r", stdin);
    //freopen("success.out", "w", stdout);
    ll t = 1;
    //cin >> t;
    while(t--) {
        solve();
    }
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50