HDU 3006

#include <iostream>
#include <cstdio>
#include <cstring>

using namespace std;

int dp[1<<15];

int main() {
    int n, m;
    while(~scanf("%d%d", &n, &m)) {
        memset(dp, 0, sizeof(dp));
        for(int i = 0; i < n; i++) {
            int k;
            scanf("%d",&k);
            int s = 0;
            for(int j = 0; j < k; j++) {
                int e;
                scanf("%d", &e); 
                s |= (1<<(e-1));
            }
            dp[s] = 1;
            for(int j = 0; j < (1<<14); j++)
                if(dp[j]) 
                    dp[s|j] = 1;
        }
        int ans = 0;
        for(int i = 0; i < (1<<14); i++)
            if(dp[i]) ans++;
        printf("%d\n", ans);
    }
    return 0;
}