Untitled

mail@pastecode.io avatar
unknown
plain_text
a year ago
1.4 kB
1
Indexable
Never
///
#include<iostream>


using namespace std;
int n;
int arr[20][20];
int arrC[200][2];
int visit[20][20];
int step=0;
int ans=1000000;
int dx[]= {-1,0,1,0};
int dy[]= {0,1,0,-1};
void reset(){
	int h=0;
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			visit[i][j]=0;
		}
	}
}

bool check (int v, int d){
	int tempx = arrC[v][0]+dx[d];
	int tempy = arrC[v][1]+dy[d];
	while(tempx >=0 && tempx<n && tempy >=0&&tempy<n){
		if(visit[tempx][tempy]==1){
			return false;
		}
		tempx = tempx+dx[d];
		tempy= tempy+dy[d];
	}

	return true;
}

int setWires(int v, int d){
	int l=0;
	int tempx = arrC[v][0]+dx[d];
	int tempy = arrC[v][1]+dy[d];

	while(tempx >=0 && tempx < n && tempy >=0 && tempy < n){
		visit[tempx][tempy]=1- visit[tempx][tempy];
		l++;
		tempx = tempx+dx[d];
		tempy= tempy+dy[d];

	}

	return l;
}
void Try(int v,int sum){
	if(v==step){
		if(sum<ans){
			ans=sum;
		}
		return;
	}

	for(int i=0;i<4;i++){
		if(check(v,i)){
			sum+= setWires(v,i);
			Try(v+1, sum);
			sum-=  setWires(v,i);
		}
	}
}
int main(){
	//freopen("input.txt","r",stdin);
	int t;
	cin>>t;
	for(int test=1;test<=t;test++){
		cin>>n;
		step=0;
		reset();
		for(int i=0;i<n;i++){
			for(int j=0;j<n;j++){
				cin>>arr[i][j];
				if(arr[i][j]==1){
					arrC[step][0]=i;
					arrC[step][1]=j;
					visit[i][j]=1;
					step++;
				}
			}
		}
		 ans=1000000;
		 Try(0,0);
		 cout<<"#"<<test<<" "<<ans<<endl;
	}
	return 0;

}