#include #include using namespace std; using namespace atcoder; using ll=long long; using mint=modint998244353; int main() { int n; cin>>n; vector> graph(n); for(int i=1;i>u>>v; u--;v--; graph[u].push_back(v); graph[v].push_back(u); } vector fact(n+1,1); for(int i=0;i