#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;} //------------------------------------------------------- template class UF { public: vector par,rank,cnt; UF() {par=rank=vector(um,0); cnt=vector(um,1); for(int i=0;irank[y]) return par[x]=y; rank[x]+=rank[x]==rank[y]; return par[y]=x; } }; UF<101010> uf; int N,M; vector G[101010]; const ll mo=1000000007; ll ret[101010]; ll modpow(ll a, ll n = mo-2) { ll r=1;a%=mo; while(n) r=r*((n%2)?a:1)%mo,a=a*a%mo,n>>=1; return r; } void solve() { int i,j,k,l,r,x,y; string s; cin>>N>>M; FOR(i,N) G[i].push_back(i); FOR(i,M) { cin>>x>>y; x=uf[x-1]; y=uf[y-1]; if(x!=y) { if(uf.count(x)==uf.count(y)) { k=uf(x,y); r=k^x^y; FORR(v,G[r]) G[k].push_back(v); } else if(uf.count(x)>uf.count(y)) { k=uf(x,y); if(k!=x) swap(G[k],G[x]); } else { k=uf(x,y); if(k!=y) swap(G[k],G[y]); } } } FOR(i,N) if(uf[i]==i) { FORR(v,G[i]) ret[v]=modpow(G[i].size()); } FOR(i,N) cout<