34 lines
690 B
C++
34 lines
690 B
C++
#include<stdio.h>
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#include<string.h>
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int s[1<<15];
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int n,m,k,element;
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int main()
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{
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while(scanf("%d%d",&n,&m)!=EOF)
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{
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int ans=0;
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memset(s,0,sizeof(s));
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while(n--)
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{
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int set=0;
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scanf("%d",&k);
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while(k--)
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{
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scanf("%d",&element);
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set=set|(1<<(element-1));
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}
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s[set]=1;
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for(int j=0;j<=(1<<14);j++)
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{
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if(s[j]){s[set|j]=1;}
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}
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}
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for(int i=0;i<=1<<14;i++)
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{
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if(s[i]){ans++;}
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}
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printf("%d\n",ans);
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}
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return 0;
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}
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