<s>
UVa	B-General_Concept
Online	I-General_Concept
Judge	I-General_Concept
is	O
an	O
online	O
automated	O
judge	O
for	O
programming	O
problems	O
hosted	O
by	O
University	O
of	O
Valladolid	O
.	O
</s>
<s>
A	O
user	O
may	O
submit	O
a	O
solution	O
in	O
ANSI	O
C	B-Language
(	O
C89	O
)	O
,	O
C++	B-Language
(	O
C++98	O
)	O
,	O
Pascal	B-Application
,	O
Java	B-Language
,	O
C++11	B-Language
or	O
Python	B-Language
.	O
</s>
<s>
Originally	O
it	O
began	O
without	O
the	O
last	O
three	O
options	O
,	O
but	O
the	O
Java	B-Language
option	O
was	O
added	O
in	O
2001	O
,	O
the	O
C++11	B-Language
option	O
was	O
added	O
in	O
2014	O
,	O
then	O
the	O
Python	B-Language
option	O
was	O
added	O
in	O
2016	O
.	O
</s>
<s>
UVa	B-General_Concept
OJ	I-General_Concept
also	O
hosts	O
contests	O
.	O
</s>
<s>
The	O
UVa	B-General_Concept
OJ	I-General_Concept
was	O
created	O
in	O
1995	O
by	O
Miguel	O
Ángel	O
Revilla	O
,	O
a	O
mathematician	O
teaching	O
algorithms	O
at	O
the	O
University	O
of	O
Valladolid	O
in	O
Spain	O
.	O
</s>
<s>
Ciriaco	O
García	O
de	O
Celis	O
,	O
an	O
informatics	O
student	O
at	O
the	O
University	O
of	O
Valladolid	O
,	O
implemented	O
the	O
first	O
version	O
of	O
the	O
judge	O
using	O
Bash	B-Operating_System
,	O
and	O
then	O
developed	O
and	O
maintained	O
it	O
for	O
more	O
than	O
eight	O
years	O
.	O
</s>
<s>
In	O
July	O
2000	O
,	O
UVa	B-General_Concept
Online	I-General_Concept
Judge	I-General_Concept
started	O
to	O
host	O
training	O
contests	O
.	O
</s>
