Submission #987710

#	Time	Username	Problem	Language	Result	Execution time	Memory
987710		VMaksimoski008	Longest beautiful sequence (IZhO17_subsequence)	C++17	0 / 100	1 ms	348 KiB

subsequence

#include <bits/stdc++.h>

#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
//#define int long long

using namespace std;

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

const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;
const double eps = 1e-9;

int32_t main() {
    int n;
    cin >> n;

    vector<int> a(n+1), k(n+1);
    for(int i=1; i<=n; i++) cin >> a[i];
    for(int i=1; i<=n; i++) cin >> k[i];

    bool dp[n+1][n+1];
    pii par[n+1][n+1];
    memset(dp, 0, sizeof(dp));

    for(int i=1; i<=n; i++) dp[i][1] = 1;
    for(int i=0; i<=n; i++)
        for(int j=0; j<=n; j++) par[i][j] = { -1, - 1 };

    for(int j=2; j<=n; j++) {
        for(int i=2; i<=n; i++) {
            for(int x=1; x<i; x++) {
                if(__builtin_popcount(a[i] & a[x]) == k[j] && dp[x][j-1]) dp[i][j] = 1, par[i][j] = { x, j - 1 };
            }
        }
    }

    int ans = 0;
    pii curr = { 0, 0 };
    for(int i=1; i<=n; i++)
        for(int j=1; j<=n; j++)
            if(dp[i][j] && ans < j) ans = j, curr = { i, j };
    cout << ans << '\n';

    vector<int> v;

    while(curr != pii{ -1, -1 }) {
        v.push_back(curr.first);
        curr = par[curr.first][curr.second];
    }

    reverse(all(v));
    for(int &x : v) cout << x << " ";
    return 0;
}

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