Submission #1127139

#TimeUsernameProblemLanguageResultExecution timeMemory
1127139brover29Bootfall (IZhO17_bootfall)C++20
100 / 100
229 ms8740 KiB
#include <bits/stdc++.h> //qwerty47924692 using namespace std; using ll = int; const ll N=250000+3; const ll mod=1e9+7; const string br="617283"; ll n,tot,a[505],nxt[N],sz,s,cnt[N]; ll dp[N]; vector<ll>pos[N]; void solve(ll i,ll sum){ ll prv=0; for(ll w=a[i];w<=tot;w++){ dp[w]-=dp[w-a[i]]; } for(ll x=1;x<=250000;x++){ ll need=(sum+x)>>1; // if(x==1){ // cout<<need<<' '; // return ; // } if(((sum+x+1)&1) && dp[need]){ // cout<<x<<' '<<(dp[need/2])<<'\n'; cnt[x]++; if(cnt[x]==n)sz++; continue; } } for(ll w=tot;w>=a[i];w--){ dp[w]+=dp[w-a[i]]; } } int main(){ ios_base::sync_with_stdio(0); cin.tie(0); cin>>n; for(ll i=1;i<=n;i++){ cin>>a[i]; tot+=a[i]; } dp[0]=1; for(ll i=1;i<=n;i++){ for(ll w=tot;w>=a[i];w--){ dp[w]+=dp[w-a[i]]; } } if(!dp[tot/2]||tot&1){ cout<<0; return 0; } for(ll i=1;i<=n;i++){ solve(i,tot-a[i]); // return 0; // cout<<'\n'; } cout<<sz<<'\n'; for(ll x=1;x<=250000;x++){ if(cnt[x]==n)cout<<x<<' '; } }
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