Submission #891631

#	Time	Username	Problem	Language	Result	Execution time	Memory
891631		Arp	Stove (JOI18_stove)	C++17	100 / 100	17 ms	2140 KiB

stove

#include<bits/stdc++.h>
using namespace std;
using i64 = long long;

int main(){

  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int N,K;
  cin >> N >> K;
  K --;
  vector<int> T(N);
  for(int i = 0;i<N;i++){
    cin >> T[i];
  }
  int ans = T[N - 1] - T[0] + 1;
  vector<int> seg(N - 1);
  for(int i = 0;i<N - 1;i++){
    seg[i] = T[i + 1] - T[i] - 1;
  }
  sort(seg.begin(),seg.end());
  for(int i = N - 1;i >= N - K;i--){
    ans -= seg[i - 1];
  }
  cout << ans << '\n';
  return 0;
}

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