Submission #661045

#	Time	Username	Problem	Language	Result	Execution time	Memory
661045		Kaztaev_Alisher	Longest beautiful sequence (IZhO17_subsequence)	C++17	7 / 100	3 ms	468 KiB

subsequence

//#pragma GCC optomize ("Ofast")
//#pragma GCC optomize ("unroll-loops")
//#pragma GCC target ("avx,avx2,fma")

#include <bits/stdc++.h>
#define F first
#define S second
#define pb push_back
#define sz size
#define cl clear
#define ins insert
#define ers erase
#define pii pair < int , int >
#define pll pair< long long  , long long >
#define all(x) x.begin() , x.end()
#define ios ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
#define tostr(x) to_string(x)
#define tonum(s) atoi(s.c_str())
#define seon(x) setprecision(x)
#define bpop(x) __builtin_popcount(x)
#define deb(x) cerr << #x  << " = " << x << endl;

typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ldb;
const double PI = 3.14159265;

const ll N = 505;
const ll mod = 1e9+7;
const ll inf = 1e9;
const ll INF = 1e18;

using namespace std;

ll a[N] , k[N] , b[N] , res[N];
void solve(){
	int n;
	cin >> n;
	int ans = 0;
	for(int i = 0; i < n; i++) cin >> a[i];
	for(int i = 0; i < n; i++) cin >> k[i];
	for(int mask = 1; mask < (1 << n) ; mask++){
		int cnt = 0;
		for(int j = 0 ; j < n; j++){
			if((mask >> j) & 1) b[cnt++] = j;
		}
		bool ok = 1;
		for(int i = 1; i < cnt; i++){
			if(bpop((a[b[i]] & a[b[i-1]])) != k[b[i]]) ok = 0; 
		}
		if(ok){
			if(cnt > ans){
				for(int i = 0; i <cnt ; i++) res[i] = b[i];
				ans = cnt;
			}
		}
	}
	cout << ans <<"\n";
	for(int i = 0; i < ans; i++) cout <<res[i]+1 <<" ";
}
signed main(){
	file("subsequence");
	ios;
	solve();
	return 0;
}
/*
*/
 

Compilation message (stderr)

subsequence.cpp: In function 'int main()':
subsequence.cpp:17:48: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 | #define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
      |                                         ~~~~~~~^~~~~~~~~~~~~~~~~~~~
subsequence.cpp:64:2: note: in expansion of macro 'file'
   64 |  file("subsequence");
      |  ^~~~
subsequence.cpp:17:77: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 | #define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
      |                                                                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
subsequence.cpp:64:2: note: in expansion of macro 'file'
   64 |  file("subsequence");
      |  ^~~~

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