app
app
le
0
y
true
app
app
le
app
s
x
0
false
app
app
le
app
s
x
app
s
y
app
app
le
x
y
app
pred
app
s
x
x
app
app
minus
x
0
x
app
app
minus
x
app
s
y
app
pred
app
app
minus
x
y
app
app
gcd
0
y
y
app
app
gcd
app
s
x
0
app
s
x
app
app
gcd
app
s
x
app
s
y
app
app
app
if_gcd
app
app
le
y
x
app
s
x
app
s
y
app
app
app
if_gcd
true
app
s
x
app
s
y
app
app
gcd
app
app
minus
x
y
app
s
y
app
app
app
if_gcd
false
app
s
x
app
s
y
app
app
gcd
app
app
minus
y
x
app
s
x
app
app
map
f
nil
nil
app
app
map
f
app
app
cons
x
xs
app
app
cons
app
f
x
app
app
map
f
xs
app
app
filter
f
nil
nil
app
app
filter
f
app
app
cons
x
xs
app
app
app
app
filter2
app
f
x
f
x
xs
app
app
app
app
filter2
true
f
x
xs
app
app
cons
x
app
app
filter
f
xs
app
app
app
app
filter2
false
f
x
xs
app
app
filter
f
xs
app
2
le
0
0
0
true
0
s
0
false
0
pred
0
minus
0
gcd
0
if_gcd
0
map
0
nil
0
cons
0
filter
0
filter2
0
FULL