Submission #1142734

#	Time	Username	Problem	Language	Result	Execution time	Memory
1142734		kitlix	Longest beautiful sequence (IZhO17_subsequence)	C++20	0 / 100	0 ms	328 KiB

subsequence

#include <bits/stdc++.h>
#define int long long

using namespace std;

const int MAXA = (1 << 8);

signed main() {
    ios_base::sync_with_stdio(0), cin.tie(0);
    int n;
    cin >> n;
    vector<int> a(n);
    for (auto& el : a)
        cin >> el;
    vector<int> k(n);
    for (auto& el : k)
        cin >> el;
    vector<pair<int, int>> dp(MAXA);
    vector<int> par(n);
    for (int i = 0; i < n; ++i) {
        int bst = 1, bstpa = -1;
        for (int j = 0; j < MAXA; ++j) {
            if (__builtin_popcount((a[i]) & j) == k[i]) {
                if (dp[j].first + 1 > bst) {
                    bst = dp[j].first + 1;
                    bstpa = dp[j].second;
                }
            }
        }
        par[i] = bstpa;
        dp[a[i]] = max(dp[a[i]], pair<int, int>{bst, i});
    }
    int mx = 0, mxi = 0;
    for (int i = 0; i < MAXA; ++i) {
        if (dp[i].first > mx) {
            mx = dp[i].first;
            mxi = dp[i].second;
        }
    }
    cout << mx << '\n';
    int cur = mxi;
    vector<int> ans;
    while (cur != -1) {
        ans.push_back(cur);
        cur = par[cur];
    }
    reverse(ans.begin(), ans.end());
    for (auto el : ans)
        cout << el + 1 << ' ';
}

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