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  1. #include <bits/stdc++.h>
  2. #define ll long long
  3. #define TIME (1.0*clock()/CLOCKS_PER_SEC)
  4. using namespace std;
  5. const int N = 2e5+1;
  6. const ll INF =1e18;
  7. const int Q =1e9+7;
  8. ll a[N];
  9. ll n,k;
  10. namespace sub1{
  11.     int main(){
  12.         sort(a+1,a+n+1);
  13.         vector<vector<ll>>dp(n+1,vector<ll>(k+1,INF));
  14.         dp[0][0] = 0;
  15.         for(ll i=1;i<=n;++i){
  16.             dp[i][0] = 0;
  17.             for(ll j=0;j<=min(k,i);++j){
  18.                 dp[i][j] = min(dp[i][j],dp[i-1][j]);
  19.                 if(i >= 2 && j >= 1) dp[i][j] = min(dp[i][j],dp[i-2][j-1]+(a[i]-a[i-1])*(a[i]-a[i-1]));
  20.             }
  21.         }
  22.         cout << dp[n][k] << endl;
  23.         return 0;
  24.     }
  25. }
  26. int main(){
  27. 	cin.tie(0)->sync_with_stdio(0);
  28. 	cout.tie(0);
  29. 	cin >> n >> k;
  30.     for(ll i=1;i<=n;++i) cin >> a[i];
  31.     sub1::main();
  32. 	return 0;
  33. }
  34.  
Success #stdin #stdout 0.01s 5324KB
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https://ideone.com/XIbwWh
language:
C++ (gcc 8.3)
created:
4 hours ago
visibility:
public

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