Submission #1204698

#	Time	Username	Problem	Language	Result	Execution time	Memory
1204698		cpdreamer	Stove (JOI18_stove)	C++20	100 / 100	12 ms	1988 KiB

stove

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

const long long  INF = 1e17;
typedef long long ll;
void solve(){
    int n;
    cin>>n;
    int k;
    cin>>k;
    int A[n];
    for(int i=0;i<n;i++)
        cin>>A[i];
    vector<ll>dif;
    ll c=0;
    for(int i=0;i<n-1;i++){
        dif.push_back(A[i+1]-A[i]);
    }
    sort(dif.begin(),dif.end());
    for(int i=0;i<n-k;i++){
        c+=dif[i]-1;
    }
    c+=n;
    cout<<c<<endl;

}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    solve();
    return 0;
}

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