제출 #1128121

#제출 시각아이디문제언어결과실행 시간메모리
1128121alikhanBootfall (IZhO17_bootfall)C++20
13 / 100
1094 ms480 KiB
#include <bits/stdc++.h> #pragma GCC optimize("O3") #pragma GCC target("avx2") #define int long long using namespace std; const int N = 1e6+100; int a[N]; int cnt1=0; int n; int p[N]; bool can(int x){ p[0]=1; bool mx=0; for(int i=0;i<=n;i++){ if(mx) break; for(int j=x-a[i];j>=0;j--){ if(p[j]==1){ int bt=j+a[i]; if(p[j+a[i]]==0) p[j+a[i]]=1; if(p[bt]==p[x-bt] && p[x-bt]==1 && x-bt==bt) { mx=1; break; } } } } // for(int i=1;i<=x;i++){ // if(p[i]==1 && p[x-i]==1 && x-i==i) { //// cout<<x<<' '<<i<<' '<<x-i<<'\n'; // mx=1; // break; // } // } for(int i=1;i<=x;i++){ p[i]=0; } return mx; } bool rec(int x){ a[n]=x; bool ok=1; for(int i=0;i<=n;i++){ cnt1+=x; cnt1-=a[i]; int old=a[i]; a[i]=0; if(!can(cnt1)) ok=0; a[i]=old; cnt1-=x; cnt1+=a[i]; } return ok; } void al() { cin>>n; int x=0; for(int i=0;i<n;i++){ cin>>a[i]; cnt1+=a[i]; } vector<int>v; for(int i=1;i<=cnt1;i++){ if(rec(i)) v.push_back(i); } cout<<v.size()<<'\n'; for(auto i:v){ cout<<i<<' '; } } signed main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); int t = 1; //cin >> t; while (t--) { al(); } }
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