Submission #910430

#	Time	Username	Problem	Language	Result	Execution time	Memory
910430		vjudge1	Longest beautiful sequence (IZhO17_subsequence)	C++17	7 / 100	3 ms	456 KiB

subsequence

// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt")

#include <bits/stdc++.h>
 
#define int long long 
#define pb push_back
#define ui unsigned int
#define ld long double
#define pl pair<long long int,  long long int>
#define boost ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define ff first    
#define ss second
#define sz size()
#define all(x) x.begin(), x.end()
 
using namespace std;
 
const int maxn = 2e5 + 11;
const int inf = 1e17 + 1;
const int mod = 1e9 + 7;
// const int mod = 998244353;
const int dx[] = {-1, 0, 0, 1, -1, -1, 1, 1};
const int dy[] = {0, -1, 1 , 0, -1, 1, -1, 1};
const double eps = 1e-10;

void solve() {
    int n;

    cin >> n;

    if(n <= 15) {
        int a[n + 1];
        int c[n + 1];

        for(int i = 0; i < n; i++) {
            cin >> a[ i ];
        }
        for(int i = 0; i < n; i++) {
            cin >> c[ i ];
        }

        vector<int> v;
        vector<int> ans;
        for(int mask = 1; mask < (1 << n); mask++) {
            v.clear();

            for(int i = 0; i < n; i++) {
                if(mask & (1 << i)) {
                    v.pb( i );
                }
            }
            bool fl = true;

            for(int k = 1; k < v.sz; k++) {
                int x = a[v[ k ]];
                int y = a[v[k - 1]];
                int bit = c[v[ k ]];

                if(__builtin_popcount(x & y) != bit) {
                    fl = false;
                    break;
                }
            }
            if(fl) {
                if(ans.sz < v.sz) {
                    ans = v;
                }
            }
        }
        cout << ans.sz << "\n";

        for(auto it : ans) {
            cout << it + 1 << ' ';
        }
    }
}   
    
signed main() {
    // freopen("sum.in", "r", stdin); 
    // freopen("sum.out", "w", stdout);
 
    boost;      

    int tt = 1;

    // cin >> tt;

    for(int i = 1; i <= tt; i++) {
        // cout << "Case " << i << ":\n";
        solve();    
    }           
}

Compilation message (stderr)

subsequence.cpp: In function 'void solve()':
subsequence.cpp:55:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |             for(int k = 1; k < v.sz; k++) {
      |                              ^

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