Submission #1092438

#	Time	Username	Problem	Language	Result	Execution time	Memory
1092438		juicy	Bootfall (IZhO17_bootfall)	C++17	100 / 100	924 ms	1080 KiB

bootfall

#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif

const int N = 505, M = 250005;

int n;
int a[N];
bitset<M / 2> dp;
bitset<M> res, tmp;

int main() {
  ios::sync_with_stdio(false); cin.tie(nullptr);

  cin >> n;
  res = bitset<M>().set();
  for (int i = 1; i <= n; ++i) {
    cin >> a[i];
  }
  for (int i = 0; i <= n; ++i) {
    dp.reset();
    dp.set(0);
    int sum = 0;
    for (int j = 1; j <= n; ++j) {
      if (i ^ j) {
        dp |= dp << a[j];
        sum += a[j];
      }
    }
    if (!i && !dp.test(sum / 2)) {
      cout << 0 << "\n";
      exit(0);
    }
    tmp.reset();
    if (i) {
      for (int ii = 0; ii <= sum / 2; ++ii) {
        if (dp.test(ii)) {
          tmp.set(sum - 2 * ii);
        }
      }
      res &= tmp;
    }
  }
  cout << res.count() << "\n";
  for (int i = 0; i < M; ++i) {
    if (res.test(i)) {
      cout << i << " ";
    }
  }
  return 0;
}

• Subtask 1: 6 / 6
• Subtask 2: 7 / 7
• Subtask 3: 15 / 15
• Subtask 4: 16 / 16
• Subtask 5: 21 / 21
• Subtask 6: 35 / 35