Submission #1025249

#	Time	Username	Problem	Language	Result	Execution time	Memory
1025249		hasan2006	Longest beautiful sequence (IZhO17_subsequence)	C++17	0 / 100	630 ms	5200 KiB

subsequence

#include <bits/stdc++.h>

using namespace std;

#define TL ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define rall(s) s.rbegin(),s.rend()
#define all(s) s.begin(),s.end()
#define pb push_back
#define se second
#define fi first
#define ll long long
#define ld long double
#define YES cout<<"YES\n"
#define Yes cout<<"Yes\n"
#define yes cout<<"yes\n"
#define NO cout<<"NO\n"
#define No cout<<"No\n"
#define no cout<<"no\n"


const int N = 1e5 + 9 , mod = 1e9 + 7;
int a[N] , b[N] , dp[11][1 << 10][1 << 10][2] , c[N] , d[N] ;


void solve()
{
    ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
    cin>>n;
    for(i = 1; i <= n; i++)
        cin>>a[i];
    for(i = 1; i <= n; i++)
        cin>>b[i];
    pair<int,int>p;
    for(i = 0; i < (1 << 10); i++)
        c[i] = __builtin_popcount(i);
    pair<int,int>ans = {-1, -1};
    for(i = 1; i <= n; i++){
        l = r=  0;
        x = 1 , y = 0;
        for(j = 0; j < 10; j++){
            if((1 << j) & a[i])
                l += (1 << j);
            if((1 << (j + 10)) & a[i])
                r += (1 << j);
        }
        for(j = 0; j < (1 << 10); j++){
            f = b[i] -  c[l & j];
            if(f < 0 || f > 10)
                continue;
            if(x < dp[f][j][r][0] + 1)
                x = dp[f][j][r][0] + 1 , y = dp[f][j][r][1];
        }
        d[i] = y;
        for(j = 0; j < (1 << 10); j++){
            f = c[r & j];
            if(dp[f][l][j][0] < x)
                dp[f][l][j][0] = x , dp[f][l][j][1] = i;
        }
        if(ans.fi < x)
            ans = {x , i};
    }
    vector<int>vc;
    while(ans.se){
        vc.pb(ans.se);
        ans.se = d[ans.se];
    }
    cout<<vc.size()<<"\n";
    reverse(all(vc));
    for(auto to : vc)
        cout<<to<<" ";
}

int main(){
    TL;

   // #ifndef ONLINE_JUDGE
        freopen("subsequence.in", "r", stdin);
        freopen("subsequence.out", "w", stdout);
    //#endif
    int t = 1;
  //  cin>>t;
    while(t--)
     {
        solve();
     }
}
// Author : حسن

Compilation message (stderr)

subsequence.cpp: In function 'void solve()':
subsequence.cpp:27:12: warning: unused variable 'q' [-Wunused-variable]
   27 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
      |            ^
subsequence.cpp:27:38: warning: unused variable 's' [-Wunused-variable]
   27 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
      |                                      ^
subsequence.cpp:27:50: warning: unused variable 'k' [-Wunused-variable]
   27 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
      |                                                  ^
subsequence.cpp:27:54: warning: unused variable 'm' [-Wunused-variable]
   27 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
      |                                                      ^
subsequence.cpp:27:58: warning: unused variable 'mn' [-Wunused-variable]
   27 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
      |                                                          ^~
subsequence.cpp:27:69: warning: unused variable 'mx' [-Wunused-variable]
   27 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mn = 1e18, mx = 0 ;
      |                                                                     ^~
subsequence.cpp: In function 'int main()':
subsequence.cpp:77:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |         freopen("subsequence.in", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
subsequence.cpp:78:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   78 |         freopen("subsequence.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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