Submission #1073527

#	Time	Username	Problem	Language	Result	Execution time	Memory
1073527		Hugo1729	Longest beautiful sequence (IZhO17_subsequence)	C++11	Compilation error	0 ms	0 KiB

subsequence

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

int main(){
    cin.tie(0)->sync_with_stdio(0);

    int n; cin >> n;
    vector<int> a(n),k(n);

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

    vector<int> dp(n,1);
    vector<int> prev(n,-1);

    int best=-1,best_pos=-1;

    for(int i=1;i<n;i++){
        for(int j=0;j<i;j++){
            if(__popcount(a[i]&a[j])==k[i]){
                if(dp[i]<dp[j]+1){
                    dp[i]=dp[j]+1;
                    prev[i]=j;
                }
            }
        }
        if(best<dp[i]){
            best=dp[i];
            best_pos=i;
        }

    }

    vector<int> out;

    cout << best << '\n';
    for(int i=0;i<best;i++){
        out.push_back(best_pos);
        best_pos = prev[best_pos];
    }

    for(int i=best-1;i>=0;i--)cout << out[i]+1 <<' ';

    cout << '\n';

    return 0;
}

Compilation message (stderr)

subsequence.cpp: In function 'int main()':
subsequence.cpp:20:16: error: '__popcount' was not declared in this scope
   20 |             if(__popcount(a[i]&a[j])==k[i]){
      |                ^~~~~~~~~~