Submission #884652

#	Time	Username	Problem	Language	Result	Execution time	Memory
884652		smax	Longest beautiful sequence (IZhO17_subsequence)	C++17	40 / 100	6045 ms	126484 KiB

subsequence

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

#ifdef LOCAL
#define DEBUG(...) debug(#__VA_ARGS__, __VA_ARGS__)
#else
#define DEBUG(...) 6
#endif

template<typename T, typename S> ostream& operator << (ostream &os, const pair<T, S> &p) {return os << "(" << p.first << ", " << p.second << ")";}
template<typename C, typename T = decay<decltype(*begin(declval<C>()))>, typename enable_if<!is_same<C, string>::value>::type* = nullptr>
ostream& operator << (ostream &os, const C &c) {bool f = true; os << "["; for (const auto &x : c) {if (!f) os << ", "; f = false; os << x;} return os << "]";}
template<typename T> void debug(string s, T x) {cerr << "\033[1;35m" << s << "\033[0;32m = \033[33m" << x << "\033[0m\n";}
template<typename T, typename... Args> void debug(string s, T x, Args... args) {for (int i=0, b=0; i<(int)s.size(); i++) if (s[i] == '(' || s[i] == '{') b++; else
if (s[i] == ')' || s[i] == '}') b--; else if (s[i] == ',' && b == 0) {cerr << "\033[1;35m" << s.substr(0, i) << "\033[0;32m = \033[33m" << x << "\033[31m | "; debug(s.substr(s.find_first_not_of(' ', i + 1)), args...); break;}}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n;
    cin >> n;
    vector<int> a(n), k(n);
    for (int &x : a)
        cin >> x;
    for (int &x : k)
        cin >> x;

    vector<pair<int, int>> dp(n);
    vector trans(1 << 10, vector(1 << 10, vector<pair<int, int>>(11)));
    for (int i=0; i<n; i++) {
        int top = a[i] >> 10, bot = a[i] & ((1 << 10) - 1);
        for (int mask=0; mask<1<<10; mask++) {
            int c = k[i] - __builtin_popcount(mask & top);
            if (0 <= c && c <= 10)
                dp[i] = max(dp[i], trans[mask][bot][c]);
        }
        dp[i].first++;
        for (int mask=0; mask<1<<10; mask++) {
            int c = __builtin_popcount(mask & bot);
            trans[top][mask][c] = max(trans[top][mask][c], {dp[i].first, i});
        }
    }

    int i = int(max_element(dp.begin(), dp.end()) - dp.begin());
    vector<int> ret;
    while (dp[i].first > 1) {
        ret.push_back(i);
        i = dp[i].second;
    }
    ret.push_back(i);
    reverse(ret.begin(), ret.end());

    cout << ret.size() << "\n";
    for (int x : ret)
        cout << x + 1 << " ";
    cout << "\n";

    return 0;
}

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