GDTEST_OK
0
1
2
3
4

0
1
2
3
4

1
2
3
4

1
0
-1
-2
-3
-4

2
4
6
-8

true
false

(10, 20)
(-30, -40)

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e
l
l
o
_
U
n
i
c
ô
d
e
_
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o
r
l
d
!
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