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## Discussion of Problem 1512. Zinium

What's wrong?
Posted by Muchacho 2 Apr 2007 13:28
I get WA in 1 test, why? This solution right at the least for N from 4 to 16.

var
q, w, r, e : integer;
begin
e := r mod 12;

if (e = 8) or (e = 9) or (e = 3) then
begin
w := 6;
for q := 1 to r div 2 do
begin
if w > r then w := 2;
writeln( q, ' ', w);
inc( w, 2)
end;
end
else
begin
w := 2;
for q := 1 to r div 2 do
begin
writeln( q, ' ', w);
inc( w, 2)
end
end;

w := 1;
for q := (r div 2) + 1 to r do
begin
writeln( q, ' ', w);
inc( w, 2);
end
end.

Edited by author 02.04.2007 13:30
Re: What's wrong?
Posted by Alexander Kouprin 2 Apr 2007 14:05
First test is 8.

1 6
2 8
3 2
4 4
5 1
6 3
7 5
8 7

Look:
000000+0
0000+000
00+00000
+0000000
000+0000
0+000000
0000000+
00000+00

8 7 and 3 2 placed on one 45 degrees line (diagonal).