oj.uz

Submission #382259

# Submission time Handle Problem Language Result Execution time Memory
382259 2021-03-26T20:57:24 Z knightron0 Beautiful row (IZhO12_beauty) C++14
100 / 100
 693 ms 172788 KB 
#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define fr first
#define sc second
#define clr(a, x) memset(a, x, sizeof(a))
#define dbg(x) cout<<"("<<#x<<"): "<<x<<endl;
#define printvector(arr) for (auto it = arr.begin(); it != arr.end(); ++it) cout<<*it<<" "; cout<<endl;
#define all(v) v.begin(), v.end()
#define lcm(a, b) (a * b)/__gcd(a, b)
#define int long long int
#define printvecpairs(vec) for(auto it: vec) cout<<it.fr<<' '<<it.sc<<endl;
#define endl '\n'
#define float long double

const int MOD = 1e9 + 7;
const int INF = 2e15;
const int MAXN = 25;



signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    #ifdef LOCAL
    freopen("input.txt", "r", stdin);
    #endif
    int n;
    cin>>n;
    int a[n], b[n], t[n];
    for(int i= 0;i<n;i++){
    	b[i] = 0;
    	t[i] = 0;
    	cin>>a[i];
    	int x = a[i];
    	while(x){
			t[i] += ((x%3)==1);
			x /= 3;
		}
		x = a[i];
		while(x){
			b[i] += ((x%2)==1);
			x /= 2;
		}
    }
    int dp[n+2][(1<<n)+2];
	for(int mask = 0;mask<(1<<n);mask++){
		for(int i= 0;i<=n;i++){
			dp[i][mask] = 0;
		}
	}
    for(int i = 0;i<n;i++) {
    	dp[i][(1<<i)] = 1;
    }
    for(int mask = 0;mask<(1<<n);mask++){
    	for(int i= 0;i<n;i++){
    		if(!(mask & (1<<i))) continue;
    		for(int j= i+1;j<n;j++){
    			if(!(mask & (1<<j))) continue;
    			if(b[i] == b[j] || t[i] == t[j]){
    				dp[i][mask] += dp[j][mask^(1<<i)];
    				dp[j][mask] += dp[i][mask^(1<<j)];
    			}
    		}
    	}
    }
    int ans = 0;
    for(int i= 0;i<n;i++){
    	ans += dp[i][(1<<n)-1];
    }
    cout<<ans<<endl;
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 6 ms 2284 KB Output is correct
12 Correct 7 ms 2432 KB Output is correct
13 Correct 23 ms 9068 KB Output is correct
14 Correct 109 ms 39276 KB Output is correct
15 Correct 119 ms 39384 KB Output is correct
16 Correct 110 ms 39404 KB Output is correct
17 Correct 118 ms 39276 KB Output is correct
18 Correct 105 ms 39276 KB Output is correct
19 Correct 651 ms 172764 KB Output is correct
20 Correct 693 ms 172788 KB Output is correct