> #include<stdio.h>
> #define maxn 1000 + 5
> #define maxk 100 + 5
> long n,m,i,j,k,l;
> long o[maxn];
> long u[maxk];
> long e[maxk][2][maxk];
> long w[maxn];
> long x,y;
> long ans;
> long r;
> char c;
> int main()
> {/*
>  freopen("in.txt","r",stdin);
>  freopen("out.txt","w",stdout);*/
>  scanf("%ld%ld",&n,&m);
>  k=0;
>  for(i=1;i<=m;i++)
>    {
> 	k++;
>     scanf("%ld",&u[k]);
>     for(j=1;j<=u[k];j++)scanf("%ld",&e[k][0][j]);
>     for(j=1;j<=u[k];j++)scanf("%ld",&e[k][1][j]);
>     c=getchar();
>     c=getchar();
>     if(c=='='){for(j=1;j<=u[k];j++)o[e[k][0][j]]=o[e[k][1][j]]=1;k--;}
>     else
>       if(c=='>')
>         for(j=1;j<=u[k];j++)
>           {l=e[k][0][j];
>            e[k][0][j]=e[k][1][j];
>            e[k][1][j]=l;}
>    }
>   m=k;
>   for(i=1;i<=n;w[i]=0,i++)
>    for(k=1;k<=2;k++)
> 	if(!o[i])
> 	{
> 	 if(k==1)w[i]=-1;
> 	 else    w[i]=1;
> 	 for(j=1;j<=m;j++)
> 	  {
> 	   x=y=0; 
> 	   for(l=1;l<=u[j];l++)
> 	   {x+=w[e[j][0][l]];
> 		y+=w[e[j][1][l]];}
> 	   if(x>=y)break;
> 	  }
> 	 if(j>m)
> 	   {ans=i;r++;}
>     }
>  if(r>1)ans=0;
>  printf("%ld\n",ans);
>  return(0);
> }