Submission #676138

#	Time	Username	Problem	Language	Result	Execution time	Memory
676138		KiriLL1ca	Longest beautiful sequence (IZhO17_subsequence)	C++17	0 / 100	2 ms	1236 KiB

subsequence

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define fr first
#define sc second
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define pw(x) (1ll << x)
#define sz(x) (int)((x).size())
#define pb push_back
#define endl '\n'
#define mp make_pair
#define vec vector

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;
typedef long double ld;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
typedef unsigned long long ull;

template <typename T> inline bool umin (T &a, const T &b) { if (a > b) { a = b; return 1; } return 0; }
template <typename T> inline bool umax (T &a, const T &b) { if (a < b) { a = b; return 1; } return 0; }
template <typename T>
using oset = tree<T, null_type, less <T>, rb_tree_tag, tree_order_statistics_node_update>;

#define bcnt(x) __builtin_popcount(x)

pii ndp[pw(10)][pw(10)][21];

inline void solve () {
        int n; cin >> n;
        vector <int> a (n); for (auto &i : a) cin >> i;
        vector <int> k (n); for (auto &i : k) cin >> i;

        auto lef = [&] (int x) { return (x & (pw(10) - 1)); };
        auto rig = [&] (int x) { return (x - lef(x)) >> 10; };

        vector <int> dp (n, 1), p (n); iota(all(p), 0);
        for (int i = 0; i < n; ++i) {
                int q = lef(a[i]), w = rig(a[i]);
                pii vdp = {0, -1};

                for (int msk = 0; msk < pw(10); ++msk) {
                        int need = k[i] - bcnt(q & msk);
                        if (need < 0) continue;
                        umax(vdp, ndp[msk][w][need]);
                }

                ++vdp.fr;
                tie(dp[i], p[i]) = vdp;
                vdp.sc = i;

                for (int msk = 0; msk < pw(10); ++msk) umax(ndp[q][msk][bcnt(w & msk)], vdp);
        }

        int x = max_element(all(dp)) - dp.begin();
        vector <int> res;
        while (p[x] != x) res.pb(x), x = p[x];
        res.pb(x);
        reverse(all(res));
        cout << sz(res) << endl;
        for (auto i : res) cout << i + 1 << " ";
}

signed main() {
        ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
        #ifdef LOCAL
                freopen("input.txt", "r", stdin);
                freopen("output.txt", "w", stdout);
        #endif
        int t = 1; // cin >> t;
        while (t--) solve();
        return 0;
}

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