Submission #1043069

#	Time	Username	Problem	Language	Result	Execution time	Memory
1043069		Hades504	Stove (JOI18_stove)	C++17	100 / 100	13 ms	3736 KiB

stove

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
 
void solve(){
    int n,k;
    cin>>n>>k;
    vector<int>v;
    for(int i=0;i<n;i++){
      int a;
      cin>>a;
      v.push_back(a);
    }
    vector<int>v2;
    for(int i=0;i<n-1;i++){
      int a = v[i+1]-v[i];
      v2.push_back(a);
    }
    sort(v2.rbegin(),v2.rend());
    int ans=1;
    for(int i=0;i<(k-1);i++){
      v2[i]=1;
    }
    for(auto x:v2){
      ans+=x;
    }
    cout<<ans<<endl;
}
signed main() {
  ios_base::sync_with_stdio(false); cin.tie(NULL);
  int tc=1;
  for(int i=0;i<tc;i++)solve();
  return 0;
}

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