Submission #1011729

#	Time	Username	Problem	Language	Result	Execution time	Memory
1011729		Aiperiii	Bootfall (IZhO17_bootfall)	C++14	44 / 100	1040 ms	4436 KiB

bootfall

#include <bits/stdc++.h>
#define int long long
#define all(x) x.begin(),x.end()
#define ff first
#define ss second
#define pb push_back
using namespace std;
const int N=505;
int dp[N*500];
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int n;
    cin>>n;
    vector <int> a(n);
    int sum=0;
    for(int i=0;i<n;i++){
        cin>>a[i];
        sum+=a[i];
    }
    dp[0]=1;
    for(int i=0;i<n;i++){
        for(int j=sum;j>=a[i];j--){
            dp[j]+=dp[j-a[i]];
        }
    }
    if(sum%2==1 or !dp[sum/2]){
        cout<<0<<"\n";return 0;
    }
    map <int,int> mp;
    for(int i=0;i<n;i++){
        for(int j=a[i];j<=sum;j++){
            dp[j]-=dp[j-a[i]];
        }
        for(int j=1;j<=sum-a[i];j++){
            if(j*2>sum-a[i] && dp[j]){
                mp[j*2-(sum-a[i])]++;
            }
        }
        
        for(int j=sum;j>=a[i];j--){
            dp[j]+=dp[j-a[i]];
        }
    }
    vector <int> ans;
    for(auto x : mp){
        if(x.ss==n)ans.pb(x.ff);
    }
    cout<<ans.size()<<"\n";
    for(auto x : ans)cout<<x<<" ";
    cout<<'\n';
}
/*
 4
 1 3 1 5
 
 6
 3 5 7 11 9 13
 
 3
 2 2 2
 
 4
 200 200 200 200
 
 
 4 25
 1 2 3 4
 1 2 3 4
 12 6 3 4
 3 3
 19 4 5
 2 6 2
 
 5 60000
 630510219 369411957 874325200 990002527 567203997
 438920902 634940661 593780254 315929832 420627496

*/

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