Submission #1009023

#	Time	Username	Problem	Language	Result	Execution time	Memory
1009023		Muaath_5	Bootfall (IZhO17_bootfall)	C++17	0 / 100	2 ms	600 KiB

bootfall

#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
using namespace std;

const int N = 1000;

int n, a[N];

int main()
{
	ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	cin >> n;
	int sum = 0;
	bitset<N> ddp;
	ddp[0] = 1;
	for (int i = 0; i < n; i++) {
		cin >> a[i];
		sum += a[i];
		ddp |= (ddp << a[i]);
	}
	if (sum%2 == 1 || !ddp[sum/2]) {
		cout << "0\n";
		return 0;
	}
	vector<int> v;
	for (int i = 1; i <= sum; i++) {
		bool ok = true;
		for (int p = 0; p < n; p++) {
			bitset<N> dp;
			dp[0] = 1;
			int ss = 0;
			for (int j = 0; j < n; j++) {
				if (p == j) continue;
				dp |= (dp << a[j]);
				ss += a[j];
			}
			if ((ss+i)%2 == 1) {
				ok = false;
				break;
			}
			if (!dp[(ss+i)/2]) {
				ok = false;
				break;
			}
		}
		if (ok) v.push_back(i);
	}
	cout << v.size() << '\n';
	for (int i : v) cout << i << ' ';
}

• Subtask 1: 0 / 6
• Subtask 2: 0 / 7
• Subtask 3: 0 / 15
• Subtask 4: 0 / 16
• Subtask 5: 0 / 21
• Subtask 6: 0 / 35