Submission #1107346

#	Time	Username	Problem	Language	Result	Execution time	Memory
1107346		vjudge1	Kpart (eJOI21_kpart)	C++17	30 / 100	2056 ms	752 KiB

Main

/**
 *    hello
 *    author:  N29
 *    created: 2024-11-01 10:28:15
**/
#include<bits/stdc++.h>
using namespace std;
#ifndef BADGNU
#pragma GCC target("sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#endif
#pragma GCC optimize("Ofast,unroll-loops,fast-math,O3")
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp> 
using namespace __gnu_pbds;
#define ll long long
// #define int ll
#define ld long double
#define y1 cheza
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
template<class T> using ordered_set = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
template<class T> using ordered_multiset = tree<T,null_type,less_equal<T>,rb_tree_tag,tree_order_statistics_node_update>;
const int N=5e4+100;
const int M=5001;
const int B=447;
const int mod=998244353;
const ll INF=1e18;
const int dx[]={1,-1,0,0};
const int dy[]={0,0,1,-1};
const double eps=1e-6;
int n;
int a[N];
int pref[N];
bitset<N> dp;
bool bad[N];
void test(){
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        bad[i]=0;
    }
    for(int i=1;i<=n;i++){
        pref[i]=pref[i-1]+a[i];
    }
    for(int i=1;i<=n;i++){
        dp.reset();
        dp[0]=1;
        for(int j=i;j<=n;j++){
            dp=(dp|dp<<a[j]);
            if((pref[j]-pref[i-1])&1ll){
                bad[(j-i+1)]=1;
                continue;
            }
            if(!dp[(pref[j]-pref[i-1])>>1ll]){
                bad[(j-i+1)]=1;
            }
        }
    }
    vector<int>v;
    for(int i=1;i<=n;i++){
        if(bad[i])continue;
        v.push_back(i);
    }
    
    cout<<v.size()<<' ';
    for(auto i:v){
        cout<<i<<' ';
    }
    cout<<'\n';
    
}



/*

*/
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    // cout.tie(nullptr);
    int t2=1;
    cin>>t2;
    for(int i=1;i<=t2;i++){
        test();
    }
}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 70