#include using namespace std; typedef signed long long ll; #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define FORR2(x,y,arr) for(auto& [x,y]:arr) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) template bool chmax(T &a, const T &b) { if(a bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;} //------------------------------------------------------- int N,M; const ll mo=998244353; const int MAT=2080; bitset<2080> BS[2080]; int Rank(int R,int C,bitset BS[MAT]) { int i,j,k; int nex=0; FOR(i,R) { while(nex=C) break; swap(BS[i],BS[j]); FOR(j,R) if(i!=j && BS[j][nex]) BS[j]^=BS[i]; nex++; } return i; } void solve() { int i,j,k,l,r,x,y; string s; cin>>N>>M; vector> V; V.resize(1); FOR(i,N) V[0].push_back(i); FOR(i,M) { int dp[1010]={}; cin>>x; while(x--) { cin>>y; dp[y-1]=1; } vector> W; FORR(v,V) { vector A[2]; FORR(a,v) A[dp[a]].push_back(a); FOR(j,2) if(A[j].size()) W.push_back(A[j]); } V=W; } ll ret=1; FOR(i,V.size()) ret=ret*2%mo; cout<