Program Adunare;
type vector=array[1..30000] of integer;
var n:vector;
    f,g:text;
    a,b,S,i:integer;
Begin
assign(f,'adunare.in');
reset(f);
For i:=1 to 30000 do
 read(f,a,b);
 close(f);
 S:=a+b;
 assign(g,'adunare.out');
 rewrite(g);
 write(g,S);
 close(g);
End.