Submission #1006636

#	Time	Username	Problem	Language	Result	Execution time	Memory
1006636		SulA	Longest beautiful sequence (IZhO17_subsequence)	C++17	7 / 100	5 ms	452 KiB

subsequence

#include <bits/stdc++.h>
using namespace std;

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    int n; cin >> n;
    int a[n], k[n];
    for (int& i : a) cin >> i;
    for (int& i : k) cin >> i;

    pair<int,vector<int>> ans = {0, {}};
    for (int mask = 0; mask < 1 << n; mask++) {
        vector<int> S;
        for (int i = 0; i < n; i++) if (mask & (1 << i)) {
            S.push_back(i);
        }
        int l = S.size();
        bool isB = true;
        for (int j = 1; j < l; j++) {
            if (__builtin_popcount(a[S[j]] & a[S[j-1]]) != k[S[j]]) isB = false;
        }
        if (isB) {
            ans = max(ans, {l, S});
        }
    }
    cout << ans.first << "\n";
    for (auto i : ans.second) cout << 1+i << " ";
}

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