31
+
9
=
19
+
36
=
12
+
23
=
19
+
49
=
25
+
0
=
16
+
15
=
32
+
50
=
7
+
21
=
20
+
27
=
8
+
68
=
17
+
5
=
19
+
37
=
15
+
22
=
9
+
20
=
43
+
27
=
1
+
50
=
57
+
10
=
1
+
15
=
38
+
7
=
10
+
4
=