Submission #282444

#	Time	Username	Problem	Language	Result	Execution time	Memory
282444		keta_tsimakuridze	Beautiful row (IZhO12_beauty)	C++14	100 / 100	980 ms	205556 KiB

beauty

#include<bits/stdc++.h>
#define int long long
using namespace std;
long long n,k,b,ones[2][25],cur,a[25],dp[2000005][25],ans;
 main(){
	cin>>n;
	for(k=0;k<n;k++){
		cin>>a[k];
		b=a[k];
		while(b){
			if(b%2) ones[0][k]++;
			b/=2;
		}
		b=a[k];
		while(b){
			if(b%3==1) ones[1][k]++;
			b/=3;
		}
		dp[1<<k][k]=1;
	}
	for(k=1;k<(1<<n);k++){
		for(int j=0;j<n;j++){
			b=1ll<<j;
			if(! (b&k)) continue;
			cur=k^b;
		for(int i=0;i<n;i++){
			b=1ll<<i;
			if(!(b&cur)) continue;
		//	cout<<k<<" "<<i<<" "<<j<<endl;
			if(ones[0][j]==ones[0][i] || ones[1][j]==ones[1][i]){
			dp[k][j]+=dp[cur][i];// cout<<cur<<" "<<i<<endl;
			
		} }
	//	cout<<k<<"_"<<j<<" "<<dp[k][j]<<endl;
		if(k == ((1<<n) -1)) ans+=dp[k][j];
	} }
	cout<<ans;
}

Compilation message (stderr)

beauty.cpp:5:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    5 |  main(){
      |       ^

• Subtask 1: 100 / 100