#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long ll;
typedef double db;
typedef vector<long long> vl;
typedef pair<long long, long long > pl;
const int N = 1e6 + 1;
#define po pop_back
#define pb push_back
#define mk make_pair
#define lw lower_bound
#define up upper_bound
#define ff first
#define ss second
#define boost ios_base::sync_with_stdio(); cin.tie(0); cout.tie(0);
#define MOD 1000000007
#define MAX 1e18
#define MIN -1e18
#define per(i,a,b) for(ll i=b;i>=a;i--)
#define con continue
#define freopen freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout);
#define PI 3.14159265358979323846264338327950288419716939937510582097494459230781640628
//typedef tree<ll , null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
template< typename T>
using indexed_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
ll n, m, ans, mid, mn, mx, cnt, sum, h1, h2, arr[3234567],arr1[1234567], sz, k, i, j, h, a, w, x, y, z,par[1234567];
bool used[1234567];
ll dx[4]={-1,1,0,0},dy[4]={0,0,-1,1},c1[123][123];
vector<ll> edge[1234567];
ll jump[22][223456];
ll lvl[1234567];
//ll bit[1234567];
//ll timer;
//ll st[1234567],endd[1234567];
//ll dp[5005][5005];
ll power(ll base, ll val, ll mod) {
ll res = 1;
while (val) {
if (val % 2 == 1) {
res = res * base;
}
base = base * base;
base %= mod;
res %= mod;
val /= 2;
}
return res;
}
bool comp(pl x,pl y){
if(x.ff>y.ff)return true;
return false;
}
ll find(ll x){
if(x==par[x])return x;
else return par[x]=find(par[x]);
}
void process_LCA(){
for(int i=1;(1<<i)<=n;i++){
for(int j=1;j<=n;j++){
jump[i][j] = jump[i-1][jump[i-1][j]];
}
}
}
ll LCA(ll x,ll y){
if(lvl[x] < lvl[y])swap(x,y);
ll diss = lvl[x] - lvl[y];
for(int i=21;i>=0;i--){
if((1<<i)&diss){
x = jump[i][x];
}
}
if(x==y)return x;
for(int i=21;i>=0;i--){
if(jump[i][x] != jump[i][y]){
x = jump[i][x];
y = jump[i][y];
}
}
return jump[0][x];
}
bool check(ll x,ll y){
//cout<<x<<" "<<y<<'\n';
ll res1=0,res2=0;
if(__builtin_popcount(x) == __builtin_popcount(y))return true;
while(x){
if(x%3==1)res1++;
x/=3;
}
while(y){
if(y%3==1)res2++;
y/=3;
}
if(res1==res2)return true;
else return false;
}
ll dp[1<<21][22];
class A {
public:
static void funcA() {
cin>>n;
for(int i=0;i<n;i++){
cin>>arr[i];
dp[(1<<i)][i]=1;
}
for(int i=0;i<(1<<n);i++){
for(int j=0;j<n;j++){
for(int k=0;k<n;k++){
if(!((1<<j)&i) && check(arr[j],arr[k])==true){
dp[(1<<j)|i][j] += dp[i][k];
}
}
}
}
for(int i=0;i<n;i++)ans+=dp[(1<<n)-1][i];
cout<<ans;
}
}lol;
void solve() {
A::funcA();
}
int main() {
ll T = 1;
//cin>>T;
boost;
while (T--) {
solve();
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
16 ms |
29180 KB |
Output is correct |
| 2 |
Correct |
15 ms |
29232 KB |
Output is correct |
| 3 |
Correct |
15 ms |
29300 KB |
Output is correct |
| 4 |
Correct |
16 ms |
29260 KB |
Output is correct |
| 5 |
Correct |
16 ms |
29312 KB |
Output is correct |
| 6 |
Correct |
17 ms |
29424 KB |
Output is correct |
| 7 |
Correct |
16 ms |
29456 KB |
Output is correct |
| 8 |
Correct |
15 ms |
29428 KB |
Output is correct |
| 9 |
Correct |
16 ms |
29488 KB |
Output is correct |
| 10 |
Correct |
16 ms |
29428 KB |
Output is correct |
| 11 |
Correct |
45 ms |
32068 KB |
Output is correct |
| 12 |
Correct |
42 ms |
32072 KB |
Output is correct |
| 13 |
Correct |
143 ms |
40468 KB |
Output is correct |
| 14 |
Correct |
907 ms |
74436 KB |
Output is correct |
| 15 |
Correct |
364 ms |
74380 KB |
Output is correct |
| 16 |
Correct |
1179 ms |
74568 KB |
Output is correct |
| 17 |
Correct |
1074 ms |
74432 KB |
Output is correct |
| 18 |
Correct |
1470 ms |
74436 KB |
Output is correct |
| 19 |
Execution timed out |
3078 ms |
209888 KB |
Time limit exceeded |
| 20 |
Halted |
0 ms |
0 KB |
- |
