Submission #1169896

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1169896	2025-03-19 09:20:49	PieArmy	Split the sequence (APIO14_sequence)	C++20	0 / 100	0 ms	584 KiB

sequence

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#include<bits/stdc++.h>
typedef __int128_t ll;
using namespace std;
#define int ll
int32_t n,k;
int32_t arr[100023];
ll pref[100023],suf[100023];
deque<pair<int,ll>>q[200];
ll dp[200];
int opt[100023][200];
int32_t main(){
  ios_base::sync_with_stdio(false);cin.tie(NULL);
  cin>>n>>k;
  for(int i=1;i<=n;i++){
    cin>>arr[i];
    pref[i]=arr[i]+pref[i-1];
  }
  for(int i=n;i>=1;i--){
    suf[i]=suf[i+1]+arr[i];
  }
  q[k-1].push_back({0,0});
  ll ans=-1;
  for(int i=1;i<n;i++){
    for(int j=0;j<k;j++){
      opt[i][j]=opt[i-1][j];
      while(q[j].size()>1){
        if(q[j][0].second-suf[i+1]*pref[q[j][0].first]<=q[j][1].second-suf[i+1]*pref[q[j][1].first])q[j].pop_front();
        else break;
      }
 
 
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• Subtask 1: 0 / 11
• Subtask 2: 0 / 11
• Subtask 3: 0 / 11
• Subtask 4: 0 / 17
• Subtask 5: 0 / 21
• Subtask 6: 0 / 29