<s>
Logical	O
Language	O
for	O
the	O
Representation	O
of	O
Synthesis	O
Algorithms	O
(	O
LYaPAS	B-Language
,	O
Russian	O
:	O
ЛЯПАС	O
)	O
is	O
a	O
programming	O
language	O
created	O
by	O
Arkady	O
Zakrevsky	O
in	O
the	O
Soviet	O
Union	O
.	O
</s>
<s>
LYaPAS	B-Language
was	O
initially	O
designed	O
especially	O
for	O
non-numeric	O
programming	O
for	O
the	O
Soviet	O
designed	O
and	O
built	O
line	O
of	O
mainframe	B-Architecture
computers	I-Architecture
named	O
Ural-1	O
.	O
</s>
<s>
LYaPAS	B-Language
uses	O
octal	O
numbers	O
.	O
</s>
<s>
A	O
further	O
refinement	O
of	O
LYaPAS	B-Language
is	O
LYaPAS-M	O
.	O
</s>
<s>
The	O
first	O
widely	O
available	O
book	O
about	O
the	O
language	O
was	O
published	O
in	O
Russian	O
( Логический	O
язык	O
для	O
представления	O
алгоритмов	O
синтеза	O
релейных	O
устройств	O
,	O
1966	O
)	O
,	O
which	O
was	O
soon	O
translated	O
and	O
published	O
in	O
English	O
(	O
LYaPAS	B-Language
:	O
a	O
programming	O
language	O
for	O
logic	O
and	O
coding	O
algorithms	O
,	O
1969	O
)	O
.	O
</s>
<s>
The	O
book	O
contained	O
a	O
collection	O
of	O
articles	O
with	O
full	O
LYaPAS	B-Language
descriptions	O
,	O
some	O
algorithms	O
in	O
the	O
language	O
and	O
descriptions	O
of	O
programming	O
environments	O
for	O
the	O
Ural-1	O
and	O
M-20	B-Device
computers	O
which	O
operated	O
at	O
a	O
speed	O
of	O
100	O
and	O
20,000	O
operations	O
per	O
second	O
,	O
respectively	O
.	O
</s>
<s>
In	O
1974	O
,	O
LYaPAS-M	O
,	O
a	O
new	O
version	O
of	O
the	O
language	O
,	O
appeared	O
.	O
</s>
<s>
Zakrevsky	O
later	O
worked	O
on	O
LYaPAS	B-Language
at	O
the	O
Laboratory	O
of	O
System	O
Programming	O
and	O
Logical	O
Synthesis	O
,	O
of	O
the	O
Academy	O
of	O
Sciences	O
of	O
the	O
Byelorussian	O
SSR	O
,	O
since	O
renamed	O
the	O
National	O
Academy	O
of	O
Sciences	O
of	O
Belarus	O
.	O
</s>
<s>
Example	O
program	O
in	O
LYaPAS-M	O
for	O
calculating	O
GCD	O
of	O
variables	O
N	O
and	O
M	O
:	O
</s>
<s>
Conditional	B-General_Concept
branch	I-General_Concept
operation	O
moves	O
the	O
execution	O
to	O
line	O
2	O
if	O
the	O
current	O
value	O
is	O
zero	O
.	O
</s>
<s>
is	O
an	O
unconditional	B-General_Concept
branch	I-General_Concept
to	O
line	O
1	O
.	O
</s>
