Submission #722255

#	Time	Username	Problem	Language	Result	Execution time	Memory
722255		urosk	Longest beautiful sequence (IZhO17_subsequence)	C++14	0 / 100	9 ms	9584 KiB

subsequence

#define here cerr<<"===========================================\n"
#define dbg(x) cerr<<#x<<": "<<x<<endl;
#include "bits/stdc++.h"
//#include <ext/pb_ds/tree_policy.hpp>
//#include <ext/pb_ds/assoc_container.hpp>
#define ld double
#define ll long long
#define llinf 100000000000000000LL // 10^17
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define all(a) a.begin(),a.end()
#define ceri(a,l,r) {cerr<<#a<<": ";for(ll i_ = l;i_<=r;i_++) cerr<<a[i_]<< " ";cerr<<endl;}
#define cer(a) {cerr<<#a<<": ";for(ll x_ : a) cerr<<x_<< " ";cerr<<endl;}

#define daj_mi_malo_vremena ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);

using namespace std;
//using namespace __gnu_pbds;
/*
ll add(ll x,ll y){
    x+=y;
    if(x<0){
        x%=mod;
        x+=mod;
    }else{
        if(x>=mod) x%=mod;
    }
    return x;
}
ll mul(ll a,ll b){
	ll ans = (a*b)%mod;
	if(ans<0) ans+=mod;
	return ans;
}
ll po(ll x,ll y){
    if(y==0) return 1LL;
    ll ans = po(x,y/2);
    ans = mul(ans,ans);
    if(y&1) ans = mul(ans,x);
    return ans;
}
ll inv(ll x){return po(x,mod-2);}
*/
/*
typedef tree<int,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
typedef tree<int,null_type,less_equal<ll>,rb_tree_tag,tree_order_statistics_node_update> ordered_multiset;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll rnd(ll l,ll r){
    return uniform_int_distribution<ll>(l,r)(rng);
}
*/
#define maxn 100005
#define maxx 1025
ll n;
ll a[maxn];
ll k[maxn];
pll dp[maxx][maxx][11];
ll mask = (1LL<<10)-1;
ll bc[maxx][maxx];
ll last[maxn];
ll ans = 1;
ll ansid = 0;
void tc(){
    for(ll i = 0;i<=mask;i++) for(ll j = 0;j<=mask;j++) bc[i][j] = __builtin_popcount(i&j);
    cin >> n;
    for(ll i = 1;i<=n;i++) cin >> a[i];
    for(ll i = 1;i<=n;i++) cin >> k[i];
    for(ll i = 1;i<=n;i++){
        ll x = a[i];
        ll rx = (x>>10);
        ll lx = x%(1LL<<10);
        ll cur = 1;
        ll curid = i;
        for(ll l = 0;l<=mask;l++){
            if(k[i]-bc[l][lx]>0||k[i]-bc[l][lx]>10) continue;
            if(dp[l][rx][k[i]-bc[l][lx]].fi+1>cur){
                cur = dp[l][rx][k[i]-bc[l][lx]].fi+1;
                last[i] = dp[l][rx][k[i]-bc[l][lx]].sc;
            }
        }
        for(ll r = 0;r<=mask;r++){
            if(dp[lx][r][bc[rx][r]].fi<cur){
                dp[lx][r][bc[rx][r]].fi = cur;
                dp[lx][r][bc[rx][r]].sc = i;
            }
        }
        if(cur>ans){
            ansid = i;
            ans = cur;
        }
    }
    cout<<ans<<endl;
    vector<ll> v;
    while(ansid){
        v.pb(ansid);
        ansid = last[ansid];
    }
    reverse(all(v));
    for(ll x : v) cout<<x<< " ";
    cout<<endl;
}
int main(){
	daj_mi_malo_vremena
    int t; t = 1;
    while(t--){
        tc();
    }
	return 0;
}
/**
4
1 2 3 4
10 0 1 0

2
8 9
20 0

5
5 3 5 3 5
10 1 20 1 20
**/

Compilation message (stderr)

subsequence.cpp: In function 'void tc()':
subsequence.cpp:78:12: warning: unused variable 'curid' [-Wunused-variable]
   78 |         ll curid = i;
      |            ^~~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 16
• Subtask 3: 0 / 17
• Subtask 4: 0 / 60