Submission #1162262

#	Time	Username	Problem	Language	Result	Execution time	Memory
1162262		s3yoonpark	Stove (JOI18_stove)	C++20	100 / 100	13 ms	2448 KiB

stove

#include <bits/stdc++.h> 
#define int long long 
#define ssize(x) (int)x.size() 
using namespace std; 
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif
const int N = 1E5 + 5; 
int n, k; 
int t[N]; 
void solve() {
  cin >> n >> k;
  for (int i = 1; i <= n; i++) {
    cin >> t[i]; 
  }
  sort(t + 1, t + 1 + n);
  vector<int> diff; 
  for (int i = 1; i + 1 <= n; i++) {
    diff.push_back(t[i + 1] - t[i]); 
  }
  sort(diff.begin(), diff.end()); 
  int ans = 0; 
  for (int i = 0; i < n - k; i++) {
    ans += diff[i]; 
  }
  cout << ans + k << '\n'; 
}
signed main() {
  cin.tie(0) -> sync_with_stdio(0); 
  int tc = 1; 
  // cin >> tc; 
  while (tc--) solve(); 
  return 0; 
}

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