minus
x
0
x
minus
s
x
s
y
minus
x
y
f
0
s
0
f
s
x
minus
s
x
g
f
x
g
0
0
g
s
x
minus
s
x
f
g
x
2.2
g
s
x
minus
s
x
f
g
x
f
s
x
g
f
x
f
s
x
f
x
f
s
x
minus
s
x
g
f
x
g
s
x
f
g
x
minus
s
x
s
y
minus
x
y
g
s
x
g
x
true
g
s
x
g
x
g
s
x
f
g
x
f
s
x
g
f
x
f
s
x
f
x
true
s
1
1
23092
minus
2
1
0
f
1
1
25529
0
0
1
f
1
1
2438
g
1
1
0
minus
2
0
g
1
1
20653
f
s
x
minus
s
x
g
f
x
minus
x
0
x
f
0
s
0
g
0
0
g
s
x
minus
s
x
f
g
x
minus
s
x
s
y
minus
x
y
f
s
x
minus
s
x
g
f
x
false
g
s
x
minus
s
x
f
g
x
false
minus
s
x
s
y
minus
x
y
true
s
1
1
1
minus
2
1
0
f
1
1
1
0
0
1
f
1
1
2438
g
1
1
0
minus
2
2
0
g
1
1
36466
f
s
x
minus
s
x
g
f
x
minus
x
0
x
f
0
s
0
g
0
0
g
s
x
minus
s
x
f
g
x
minus
s
x
s
y
minus
x
y
NaTT
certifiable-1.6