program CODEVS1073;var i,j,m,n,q,x,y,k1,k2,z:longint;    f:array[0..10000] of longint;function find(x:longint):longint;var fa:longint;begin  while f[x]=x do exit(x);  fa:=find(f[x]);  f[x]:=fa;  exit(fa);end;begin  readln(n,m,q);  for i:=1 to n do f[i]:=i;  for i:=1 to m do    begin      readln(k1,k2);      x:=find(k1);      y:=find(k2);      f[y]:=x;    end;  for i:=1 to q do    begin      readln(k1,k2);      x:=find(k1);      y:=find(k2);      if f[x]=f[y] then writeln(‘Yes‘) else writeln(‘No‘);        end;end.