Cerca il numero mancante.

 

x
x
x
x
x
:
:
:
:
:
22
22
33
44
75
=
=
=
=
=
3
4
3
1
1
x
x
x
x
x
=
=
=
=
=
.....
.....
.....
.....
.....
x
x
x
x
x
:
:
:
:
:
34
43
24
31
32
=
=
=
=
=
2
2
2
3
3
x
x
x
x
x
=
=
=
=
=
.....
.....
.....
.....
.....

 

x
x
x
x
x
:
:
:
:
:
35
50
66
80
25
=
=
=
=
=
1
1
1
1
4
x
x
x
x
x
=
=
=
=
=
.....
.....
.....
.....
.....

 

x
x
x
x
x
:
:
:
:
:
25
25
25
10
50
=
=
=
=
=
2
3
1
10
2
x
x
x
x
x
=
=
=
=
=
.....
.....
.....
.....
.....
x
x
x
x
x
:
:
:
:
:
53
38
29
34
46
=
=
=
=
=
1
2
3
2
2
x
x
x
x
x
=
=
=
=
=
.....
.....
.....
.....
.....