Submission #889841

#	Time	Username	Problem	Language	Result	Execution time	Memory
889841		heeheeheehaaw	Beautiful row (IZhO12_beauty)	C++17	0 / 100	3039 ms	86984 KiB

beauty

#include <iostream>
#define int long long

using namespace std;

int dp[1049000][21];
int v[25];

int nr2(int n)
{
    int nr = 0;
    while(n >= 1)
    {
        if(n % 2 == 1)
            nr++;
        n /= 2;
    }

    return nr;
}

int nr3(int n)
{
    int nr = 0;
    while(n >= 1)
    {
        if(n % 3 == 1)
            nr++;
        n /= 3;
    }

    return nr;
}

signed main()
{
    int n;
    cin>>n;
    for(int i = 0; i < n; i++)
        cin>>v[i];

    for(int mask = 1; mask < (1 << n); mask++)
    {
        int nr = 0, b = 0;
        for(int i = 0; i < n; i++)
            if(((1 << i) & mask) != 0)
                nr++, b = i;
        if(nr == 1)
        {
            dp[mask][b] = 1;
        }
        else
        {
            for(int i = 0; i < n; i++)
            {
                if(((1 << i) & mask) != 0)
                {
                    for(int j = 0; j < n; j++)
                    {
                        if(((1 << j) & (mask ^ (1 << i))) == 0)
                            continue;
                        if(nr3(v[j]) == nr3(v[i]) || nr2(v[j]) == nr2(v[i]))
                        {
                            dp[mask][i] += dp[(mask ^ (1 << i))][j];
                        }
                    }
                }
            }
        }
    }

    int rez = 0;
    for(int i = 0; i < n; i++)
        rez += dp[(1 << n) - 1][i];
    cout<<rez;
    return 0;
}

• Subtask 1: 0 / 100