Submission #631053

#	Time	Username	Problem	Language	Result	Execution time	Memory
631053		ZsofiaKeresztely	Kpart (eJOI21_kpart)	C++14	0 / 100	1 ms	852 KiB

Main

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

int main(){
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int t, n, s;
  cin >> t;
  vector<int> a, lasti, pref;
  set<int> k;
  while (t--){
    cin >> n;
    a.assign(n+1, 0);
    lasti.assign(50001, -1);
    pref.assign(n+1, 0);
    k.clear();
    s = 0;
    for (int i=1; i<n+1; i++){
      cin >> a[i];
      s += a[i];
      pref[i] = s;
    }
    s /= 2;
    for (int i=1; i<n+1; i++){
      k.insert(i);
      for (int j=s-a[i]; j>0; j--){
        lasti[j + a[i]] = max(lasti[j + a[i]], lasti[j]);
      }
      if (a[i] <= s){
        lasti[a[i]] = i;
      }
      for (int x : k){
        /*if ((pref[i] - pref[i - x]) % 2 || lasti[(pref[i] - pref[i - x]) / 2] < i - x + 1){
          cerr << x << " " << i << " " << (pref[i] - pref[i - x]) % 2 << "\n";
          k.erase(x);
        }*/
        if (x % 2){
          k.erase(x);
        }
      }
    }
    cout << k.size() << " ";
    for (int x : k){
      cout << x << " ";
    }
    cout << "\n";
  }
  return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 70