#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,D,W; 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<202020> uf,uf2; set C[202020]; void solve() { int i,j,k,l,r,x,y; string s; cin>>N>>D>>W; FOR(i,D) { cin>>x>>y; uf(x-1,y-1); } FOR(i,W) { cin>>x>>y; uf2(x-1,y-1); } FOR(i,N) { C[uf2[i]].insert(uf[i]); } ll ret=0; FOR(i,N) if(uf2[i]==i) { ll a=uf2.count(i); ll b=0; FORR(e,C[i]) b+=uf.count(e); ret+=a*b; } ret-=N; cout<