11
+
23
=
16
+
30
=
8
+
53
=
39
+
50
=
23
+
51
=
13
+
0
=
23
+
22
=
3
+
68
=
3
+
2
=
40
+
36
=
46
+
31
=
1
+
2
=
28
+
1
=
30
+
0
=
26
+
47
=
2
+
2
=
42
+
24
=
23
+
17
=
30
+
11
=
16
+
19
=