Submission #502733

#	Time	Username	Problem	Language	Result	Execution time	Memory
502733		tox1c_kid	Longest beautiful sequence (IZhO17_subsequence)	C++17	23 / 100	97 ms	1900 KiB

subsequence

//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native") // Enable AVX/AVX2
#pragma GCC optimize("Ofast")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("unswitch-loops")
#pragma GCC optimize("fast-math")
#pragma GCC optimize("rename-registers") // Optimization flags

#include <iostream>
#include <iomanip>
#include <fstream>
#include <cstdio>
#include <sstream>
#include <cassert>
#include <vector>
#include <numeric>
#include <string>
#include <bitset>
#include <cmath>
#include <complex>
#include <algorithm>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <unordered_set>
#include <map>
#include <unordered_map>
#include <random>
#include <chrono>
#include <ctime>
#include <ext/pb_ds/detail/standard_policies.hpp>
#include <ext/pb_ds/assoc_container.hpp>

/*
 ⠄⠄⠄⢰⣧⣼⣯⠄⣸⣠⣶⣶⣦⣾⠄⠄⠄⠄⡀⠄⢀⣿⣿⠄⠄⠄⢸⡇⠄⠄
⠄⠄⠄⣾⣿⠿⠿⠶⠿⢿⣿⣿⣿⣿⣦⣤⣄⢀⡅⢠⣾⣛⡉⠄⠄⠄⠸⢀⣿⠄
⠄⠄⢀⡋⣡⣴⣶⣶⡀⠄⠄⠙⢿⣿⣿⣿⣿⣿⣴⣿⣿⣿⢃⣤⣄⣀⣥⣿⣿⠄
⠄⠄⢸⣇⠻⣿⣿⣿⣧⣀⢀⣠⡌⢻⣿⣿⣿⣿⣿⣿⣿⣿⣿⠿⠿⠿⣿⣿⣿⠄
⠄⢀⢸⣿⣷⣤⣤⣤⣬⣙⣛⢿⣿⣿⣿⣿⣿⣿⡿⣿⣿⡍⠄⠄⢀⣤⣄⠉⠋⣰
⠄⣼⣖⣿⣿⣿⣿⣿⣿⣿⣿⣿⢿⣿⣿⣿⣿⣿⢇⣿⣿⡷⠶⠶⢿⣿⣿⠇⢀⣤
⠘⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣽⣿⣿⣿⡇⣿⣿⣿⣿⣿⣿⣷⣶⣥⣴⣿⡗
⢀⠈⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡟⠄
⢸⣿⣦⣌⣛⣻⣿⣿⣧⠙⠛⠛⡭⠅⠒⠦⠭⣭⡻⣿⣿⣿⣿⣿⣿⣿⣿⡿⠃⠄
⠘⣿⣿⣿⣿⣿⣿⣿⣿⡆⠄⠄⠄⠄⠄⠄⠄⠄⠹⠈⢋⣽⣿⣿⣿⣿⣵⣾⠃⠄
⠄⠘⣿⣿⣿⣿⣿⣿⣿⣿⠄⣴⣿⣶⣄⠄⣴⣶⠄⢀⣾⣿⣿⣿⣿⣿⣿⠃⠄⠄
⠄⠄⠈⠻⣿⣿⣿⣿⣿⣿⡄⢻⣿⣿⣿⠄⣿⣿⡀⣾⣿⣿⣿⣿⣛⠛⠁⠄⠄⠄
⠄⠄⠄⠄⠈⠛⢿⣿⣿⣿⠁⠞⢿⣿⣿⡄⢿⣿⡇⣸⣿⣿⠿⠛⠁⠄⠄⠄⠄⠄
⠄⠄⠄⠄⠄⠄⠄⠉⠻⣿⣿⣾⣦⡙⠻⣷⣾⣿⠃⠿⠋⠁⠄⠄⠄⠄⠄⢀⣠⣴
⣿⣿⣿⣶⣶⣮⣥⣒⠲⢮⣝⡿⣿⣿⡆⣿⡿⠃⠄⠄⠄⠄⠄⠄⠄⣠⣴⣿⣿⣿
 */

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;
typedef long double ld;
typedef double db;
typedef unsigned long long ull;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
#define all(x) (x).begin(), (x).end()
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());

template <typename A, typename B>
string to_string(pair<A, B> p);

template <typename A, typename B, typename C>
string to_string(tuple<A, B, C> p);

template <typename A, typename B, typename C, typename D>
string to_string(tuple<A, B, C, D> p);

string to_string(const string& s) {
    return '"' + s + '"';
}

string to_string(const char* s) {
    return to_string((string) s);
}

string to_string(vector<bool> v) {
    bool first = true;
    string res = "{";
    for (int i = 0; i < static_cast<int>(v.size()); i++) {
        if (!first) {
            res += ", ";
        }
        first = false;
        res += to_string(v[i]);
    }
    res += "}";
    return res;
}

template <typename A>
string to_string(A v) {
    bool first = true;
    string res = "{";
    for (const auto &x : v) {
        if (!first) {
            res += ", ";
        }
        first = false;
        res += to_string(x);
    }
    res += "}";
    return res;
}

template <typename A, typename B>
string to_string(pair<A, B> p) {
    return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}

template <typename A, typename B, typename C>
string to_string(tuple<A, B, C> p) {
    return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " + to_string(get<2>(p)) + ")";
}

template <typename A, typename B, typename C, typename D>
string to_string(tuple<A, B, C, D> p) {
    return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " + to_string(get<2>(p)) + ", " + to_string(get<3>(p)) + ")";
}

void debug_out() { cout << "\n"; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
    cout << " " << to_string(H);
    debug_out(T...);
}

#ifdef CLOWN
#define dbg(...) cout << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__);
#else
#define dbg(...);
#endif

int test = 0;

void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
}

void solve() {
    int n;
    cin >> n;
    vector<int> dp(n);

    vector<int> a(n);
    vector<int> k(n);
    for (int i =0 ; i < n; i++) cin >> a[i];
    for (int j = 0; j < n; j++) cin >> k[j];
    vector<int> p(n, -1);
    int id = 0, mx = 0;
    vector<int> used(256 + 1, -1);
    dbg(dp)

    if (n <= 5000) {
        for (int i = 0; i < n; i++) { // now
            dp[i] = 1;
            for (int j = 0; j < i; j++) { // prev
                if (__builtin_popcount(a[i] & a[j]) != k[i]) continue;

                if (dp[i] < dp[j] + 1) {
                    dp[i] = dp[j] + 1;
                    p[i] = j;
                }
            }
            if (dp[i] > mx) {
                mx = dp[i];
                id = i;
            }
        }
        vector<int> ans;
        while (id != -1) {
            ans.push_back(id);
            id = p[id];
        }
        reverse(all(ans));
        cout << ans.size() << "\n";
        for (auto i : ans) {
            cout << i + 1 << " ";
        }
    } else {
        for (int i = 0; i < n; i++) { // now
            dp[i] = 1;
            used[a[i]] = 0;
            if (i == 0) continue;
            for (int j = 0; j < (1 << 8); j++) { // prev
                if (__builtin_popcount(a[i] & j) == k[i] && used[j] != -1) {
                    if (dp[i] < dp[used[j]] + 1) {
                        dp[i] = dp[used[j]] + 1;
                        p[i] = used[j];
                    }
                }
                if (dp[i] > dp[used[a[i]]]) {
                    used[a[i]] = i;
                }
            }
        }
        for (int i = 0; i < n; i++) {
            if (dp[i] > mx) {
                mx = dp[i];
                id = i;
            }
        }
        vector<int> ans;
        while (id != -1) {
            ans.push_back(id);
            id = p[id];
        }
        reverse(all(ans));
        cout << ans.size() << "\n";
        for (auto i : ans) cout << i + 1 << " ";
    }
}

int32_t main() {
#ifdef CLOWN
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
    int t = 1;
    fastio();
    if (test) cin >> t;
    while (t--) { solve(); }
    return 0;
}

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