Submission #1271058

#	Time	Username	Problem	Language	Result	Execution time	Memory
1271058		ayathk	Stove (JOI18_stove)	C++20	100 / 100	14 ms	1864 KiB

stove

#include <bits/stdc++.h>
using namespace std;
#define fi first 
#define se second 
#define int long long 
#define all(a) a.begin(),a.end()
#define pb push_back
const int mod = 998244353;
const int maxn = 2 * 1e5 + 7;

void solve(){
    int n,k;
    cin>>n>>k;


    vector <int> a(n),dif(n - 1);
    for(int i = 0;i < n;i++){
        cin>>a[i];
        if(i > 0){
            dif[i - 1] = a[i] - a[i - 1] - 1;
        }
    }

    sort(all(dif));
    int ans = n;
    for(int i = 0;i < (n - k);i++)ans += dif[i];
    cout<<ans<<'\n';
}
signed main(){
    
    cin.tie(0) -> sync_with_stdio(0);

    int qu;
    qu = 1;
    
    while(qu--){
        solve();
    }
    return 0;

}

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