#define MD 998244353
ll@t,a[200000],u[],v[];
rep(t){
	ll@n,@(u,v)[n-1]--;
	rep(i,n){
		a[i]=-1;
	}
	rep(i,n-1){
		a[u[i]]+=1;
		a[v[i]]+=1;
	}
	Mint z;
	rep(i,n-1){
		z+=a[u[i]]*a[v[i]];
	}
	wt(z);
}