Submission #917104

#	Time	Username	Problem	Language	Result	Execution time	Memory
917104		goduadzesaba	Beautiful row (IZhO12_beauty)	C++17	100 / 100	1006 ms	205532 KiB

beauty

#include <bits/stdc++.h>
using namespace std;
long long d[(1<<20)+5][25],ans;
int a2[25],a3[25],x,i,j,bm,n;
int main(){
    cin>>n;
    for (i=0; i<n; i++){
        cin>>x; d[1<<i][i]=1;
        a2[i]=__builtin_popcount(x);
        while (x>0){
            if (x%3==1) a3[i]++;
            x/=3;
        }
    }
    //for (i=0; i<n; i++) cout<<a2[i]<<' '<<a3[i]<<'\n';
    for (bm=0; bm<(1<<n); bm++)
        for (i=0; i<n; i++)
            for (j=0; j<n; j++)
                if ((1<<i)&bm && (1<<j)&bm && i!=j)
                    if (a2[i]==a2[j] || a3[i]==a3[j])
                        d[bm][i]+=d[bm-(1<<i)][j];
    for (i=0; i<n; i++)
        ans+=d[(1<<n)-1][i];
    cout<<ans;
}

• Subtask 1: 100 / 100