题意：

思路：

按照题意暴搜

注意 如果目标串==给的串 答案是2

//By SiriurRen#include 
     
      #include 
      
       #include 
       
        using namespace std;int n,k,goal,a[1005],head,tail,q[1000000],vis[1<<16],minn[17],rec[17];char p;int main(){    memset(minn,0x3f,sizeof(minn));    scanf("%d%d",&k,&n),getchar();    for(int i=1;i<=k;i++)p=getchar(),goal=goal*2+p-'0';    for(int i=1;i<=n;i++){        getchar();        for(int j=1;j<=k;j++)            a[i]=a[i]*2+getchar()-'0';        q[tail++]=a[i];    }    while(head
        
         vis[i])minn[temp]=vis[i],rec[temp]=i;        else if(minn[temp]==vis[i])rec[temp]=min(rec[temp],i);    }    for(int i=0;i<=k;i++)        if(minn[i]<=0x3ffffff){            printf("%d\n",minn[i]);            for(int j=k-1;j>=0;j--)                printf("%d",rec[i]&(1<