Discussion @ 1068. Sum @ Timus Online Judge

DO U MIND TELLING ME WHAT'S WRONG WITH THIS?

Posted by Khosrow 25 Jun 2007 19:54

here is my program;
program khosrow;
var
n:longint;
begin
readln(n);
if n<0 then writeln((n*(1-n) div 2)+1)
else writeln((n*(n+1)) div 2);
end.

Re: DO U MIND TELLING ME WHAT'S WRONG WITH THIS?

Posted by AlexF [USTU] 25 Jun 2007 21:06

var
n:longint;
begin
readln(n);
if n<=0 then writeln((n*(1-n) div 2)+1)
else writeln((n*(n+1)) div 2);
end.

This is AC

Re: DO U MIND TELLING ME WHAT'S WRONG WITH THIS?

Posted by Khosrow 27 Jun 2007 22:39

thanks:D

Discussion of Problem 1068. Sum