Submission #966452

#	Time	Username	Problem	Language	Result	Execution time	Memory
966452		m0vlan	Stove (JOI18_stove)	C++17	100 / 100	15 ms	2520 KiB

stove

#include <bits/stdc++.h>
using namespace std;
// author: Movlan
#define ll long long
//#define int long long
#define br "\n"
#define sp " "
#define pb push_back
#define pf push_front
typedef pair<ll,int> pii;
#define vi vector<int>;
#define vpii vector<pair<int,int>>
#define all(x) x.begin(),x.end()
#define sync ios_base::sync_with_stdio(false),cin.tie(NULL),cout.tie(NULL)
struct edge{
    //int u;
    int v;
    ll w;bool operator<(edge const& other){return w<other.w;}
};


void solve(){
    int n,k;
    cin>>n>>k;
    int arr[n];
    ll res=n;
    for(int i=0;i<n;i++){
        cin>>arr[i];
    }
    ll sum=0;
    vector<int>diff;
    for(int i=1;i<=n-1;i++){
        diff.pb(arr[i]-arr[i-1]-1);
        sum+=(arr[i]-arr[i-1]-1);
    }
    sort(all(diff));
    k--;
    for(int i=n-2;i>=0 && k!=0;i--) {
        k--;
        sum-=diff[i];
    }
    cout<<sum+res;
}

signed main() {
    sync;
    int t=1;
    //cin >> t;
    while(t--){
        solve();
        //cout<<br;
    }
    return 0;
}

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