Submission #769877

#	Time	Username	Problem	Language	Result	Execution time	Memory
769877		NintsiChkhaidze	Bootfall (IZhO17_bootfall)	C++17	13 / 100	1066 ms	336 KiB

bootfall

#include <bits/stdc++.h>
#define ll long long
#define f first
#define s second
#define pb push_back
#define pii pair <int,ll>
#define left (h<<1),l,((l + r)>>1)
#define right ((h<<1)|1),((l + r)>>1) + 1,r
using namespace std;

int sum,a[505];
vector <int> ans;
bitset <10005> dp;
bool DP[250005];

signed main() {
	ios_base::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);
	
	int n;
	cin>>n;

	for (int i = 1; i <= n; i++)
		cin>>a[i],sum += a[i];

	DP[0] = 1;
	for (int i = 1; i <= n; i++){
		for (int j = sum - a[i]; j >= 0; j--)	
			DP[j + a[i]] |= DP[j];
	}

	if (sum & 1 || !DP[sum/2]){
		cout<<0;
		exit(0);
	}
	++n;
	for (int x = 1; x <= sum; x++){
		//x-s vamatebt axla
		a[n] = x;
		
		int can = 1;
		for (int j = 1; j <= n; j++){
			//j amovagdot
			int target = (sum + x - a[j]);
			if (target&1){
				can=0;
				break;
			}
			target/=2;
			dp = 0;
			dp[0] = 1;
			for (int i = 1; i <= n; i++){
				if (i != j) dp |= (dp << a[i]);
				if (dp[target]) break;
			}

			if (!dp[target]) {
				can = 0;
				break;
			}
		}
		if (can){
			ans.pb(x);
		}
	}

	cout<<ans.size()<<endl;
	for (int x: ans) 
		cout<<x<<" ";
}

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