UVa OJ 10055-Hashmat the Brave Warrior

{
Author:wzx961008
Problem:UVa 10055-Hashmat the Brave Warrior
Verdict:Accepted
Language:PASCAL
Run Time:0.152s
Submission Date:2011-01-13 09:29:12
}
var a,b:int64;
function abs(i:int64):int64;
begin
if i>0 then exit(i)
else exit(-i);
end;
begin
while not eof do begin
readln(a,b);
writeln(abs(a-b));
end;
end.