Submission #38316

#	Time	Username	Problem	Language	Result	Execution time	Memory
38316		MrPlany	Bootfall (IZhO17_bootfall)	C++14	13 / 100	113 ms	5112 KiB

bootfall

//Bismillahi-rahmani-rahim

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

typedef long long  ll;
typedef map <int, int> mii;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
const int inf=1e9;

#define azdar priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>>
#define Lebap ios_base :: sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define mp make_pair
#define pb push_back
#define pf push_front
#define pk pop_back
#define ff first
#define ss second
#define all(x) x.begin(), x.end()
//#include <conio.h>
#include <climits>
const int N = 500*500;
int dp[N+509], dp1[N+509],n,a[509], sum;
int san[N];
int main(){
	Lebap;
	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=N;j>=0;j--){
			dp[j+a[i]]+=dp[j];	
		}
	}
	
	if(sum%2 || dp[sum/2]==0) return cout << 0 , 0;
	
	for(int i=1;i<=n;i++){
		memset( dp1 , 0, sizeof(dp1) );
		for(int j=0;j<=N;j++){
			dp1[j] += dp[j];
			dp1[j+a[i]] -= dp1[j];
		}
		for(int j=0;j<=N;j++){
			if( (sum-a[i]+j)%2==0 && sum-a[i]-j>=0 && dp1[ (sum-a[i]-j)/2 ]!=0 ) san[j]++;
		}
	}
	vector <int> ans;
	for(int i=1;i<=N;i++ ) if(san[i]==n) ans.pb(i);
	cout << ans.size() << endl;
	for(int i=0;i<ans.size();i++) cout << ans[i] << " ";
	return 0;
}

Compilation message (stderr)

bootfall.cpp: In function 'int main()':
bootfall.cpp:55:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<ans.size();i++) cout << ans[i] << " ";
               ^

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