v
s
x1
s
p
p
s
s
s
s
s
s
s
s
w
p
p
s
s
p
s
p
s
x1
v
0
x1
p
p
s
s
0
p
p
s
s
s
s
s
x1
w
s
x1
s
s
s
s
s
s
p
p
s
s
v
p
p
s
s
s
p
p
s
s
x1
w
0
x1
p
s
p
p
p
p
p
p
p
p
s
s
0
s
s
s
s
s
s
x1
p
p
s
x1
p
x1
p
s
x1
x1
p
0
x1
0
s
s
s
s
s
s
s
p
s
x1
2.2
v
0
x1
p
s
s
0
p
p
s
s
s
s
s
x1
w
0
x1
p
s
s
0
s
s
s
s
s
s
x1
p
p
s
x1
p
x1
w
s
x1
p
s
s
x1
w
s
x1
v
p
p
s
s
s
p
p
s
s
x1
w
s
x1
p
s
s
s
p
p
s
s
x1
w
0
x1
p
p
p
p
p
p
s
s
0
s
s
s
s
s
s
x1
w
0
x1
p
p
p
p
p
p
p
s
s
0
s
s
s
s
s
s
x1
w
s
x1
p
p
s
s
x1
v
s
x1
p
p
s
s
s
s
s
s
s
s
w
p
p
s
s
p
s
p
s
x1
w
0
x1
p
p
p
p
p
s
s
0
s
s
s
s
s
s
x1
v
s
x1
p
s
x1
w
s
x1
p
p
s
s
v
p
p
s
s
s
p
p
s
s
x1
w
s
x1
p
p
s
s
s
p
p
s
s
x1
p
0
x1
p
s
x1
w
0
x1
p
p
s
s
0
s
s
s
s
s
s
x1
w
0
x1
p
p
p
p
p
p
p
p
s
s
0
s
s
s
s
s
s
x1
w
0
x1
p
p
p
s
s
0
s
s
s
s
s
s
x1
v
s
x1
p
p
s
s
p
s
p
s
x1
v
s
x1
p
s
p
s
x1
w
0
x1
p
p
p
p
s
s
0
s
s
s
s
s
s
x1
w
0
x1
p
s
p
p
p
p
p
p
p
p
s
s
0
s
s
s
s
s
s
x1
v
s
x1
w
p
p
s
s
p
s
p
s
x1
v
0
x1
p
p
s
s
s
s
s
x1
v
0
x1
p
p
s
s
0
p
p
s
s
s
s
s
x1
w
s
x1
p
s
s
v
p
p
s
s
s
p
p
s
s
x1
v
s
x1
p
s
s
s
s
s
s
s
s
w
p
p
s
s
p
s
p
s
x1
v
0
x1
p
s
s
s
s
s
x1
v
s
x1
p
s
s
p
s
p
s
x1
true
v
s
x1
w
p
p
s
s
p
s
p
s
x1
w
s
x1
v
p
p
s
s
s
p
p
s
s
x1
true
Failed!
NaTT
certifiable-1.6