Submission #92742

#	Time	Username	Problem	Language	Result	Execution time	Memory
92742		GioChkhaidze	Bootfall (IZhO17_bootfall)	C++14	6 / 100	216 ms	476 KiB

bootfall

#include <bits/stdc++.h>

#define F first
#define S second
#define Pb push_back

using namespace std;

int n,k[100005],X,Ans,x,su;

vector < int > ANS,a;

inline int check(int x)
{
	int Sum=0;
	
	a.Pb(x);
	
	for (int i=0; i<a.size(); i++)
		Sum+=a[i];

	for (int i=a.size()-1; i>=max(0,int(a.size())-20); i--)
	{
		int X=a[i],ko=0;
		a[i]=0;
		
		int dp[100005];
		
		for (int j=0; j<=2*su; j++)
			dp[j]=0;
		
		dp[0]=1;
		
		for (int k=0; k<a.size(); k++)
			for (int j=2*su; j>=0; j--)
				if (0<=j-a[k] && dp[j-a[k]]) dp[j]=1;
	
		if ((Sum-X)%2==1 || !dp[(Sum-X)/2]) ko=1;
			
		a[i]=X;
		
		if (ko) 
		{
			a.pop_back();
			return 0;
		}
	}

	a.pop_back();

	return 1;
}

main ()
{
	cin>>n;
	
	for (int i=1; i<=n; i++)
	{
		cin>>x;
		
		a.Pb(x);
		su+=x;
	}
	
	for (int i=1; i<=su; i++)
		if (check(i)) ANS.Pb(i);	
	
	cout<<ANS.size()<<endl;
	
	for (int i=0; i<ANS.size(); i++)
		cout<<ANS[i]<<" ";
}
/*

4
1 3 1 5

6
3 5 7 11 9 13

3
2 2 2

4
200 200 200 200
*/

Compilation message (stderr)

bootfall.cpp: In function 'int check(int)':
bootfall.cpp:19:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<a.size(); i++)
                ~^~~~~~~~~
bootfall.cpp:34:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int k=0; k<a.size(); k++)
                 ~^~~~~~~~~
bootfall.cpp: At global scope:
bootfall.cpp:54:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main ()
       ^
bootfall.cpp: In function 'int main()':
bootfall.cpp:71:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<ANS.size(); i++)
                ~^~~~~~~~~~~

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