#include #include using namespace std; using namespace atcoder; typedef long long int ll; typedef long double ld; typedef vector vi; typedef vector vvi; typedef vector vvvi; typedef vector vvvvi; typedef pair pi; typedef pair ppi; typedef pair pppi; typedef pair ppppi; #define FOR(i,l,r) for(ll i=l;i=l;i--) #define RREP(i,n) RFOR(i,0,n) #define ALL(x) x.begin(),x.end() #define F first #define S second #define BS(A,x) binary_search(ALL(A),x) #define LB(A,x) (ll)(lower_bound(ALL(A),x)-A.begin()) #define UB(A,x) (ll)(upper_bound(ALL(A),x)-A.begin()) #define COU(A,x) (UB(A,x)-LB(A,x)) #define sz(c) ((ll)(c).size()) /* #include namespace mp=boost::multiprecision; using Bint=mp::cpp_int; */ templateusing min_priority_queue=priority_queue,greater>; templateostream&operator<<(ostream&os,pair&p){os<istream&operator>>(istream&is,pair&p){is>>p.F>>p.S;return is;} templateostream&operator<<(ostream&os,vector&v){REP(i,sz(v))os<istream&operator>>(istream&is,vector&v){for(T&in:v)is>>in;return is;} templatebool chmax(T&a,T b){if(abool chmin(T&a,T b){if(b vm; typedef vector vvm; typedef vector vvvm; typedef vector vvvvm; ostream&operator<<(ostream&os,mint&a){os<>N>>K; vector>E(K); REP(i,K){ ll t;cin>>t; E[i].resize(t); cin>>E[i]; REP(j,t){ E[i][j].F--; E[i][j].S--; } } vm DP(1<>j)%2){ for(auto[u,v]:E[j]){ F[u][v]++; F[v][u]++; } } vvm L(N-1,vm(N-1)); REP(j,N-1)REP(k,N-1){ if(j!=k)L[j][k]=-F[j][k]; else{ REP(l,N)L[j][j]+=F[j][l]; } } DP[i]=det(L); } mint ans=0; REP(i,1<>j)%2==0)c++; if(c%2)ans-=DP[i]; else ans+=DP[i]; } cout<