3 19 10 42 70 10 22 42 12 5 90 13 48 1 93 10 70 20 4 4 48 6 12 0 45
2
+
2
=
6
-
3
=
4
-
4
=
5
+
5
=
4
+
8
=
3
-
2
=
10
+
2
=
10
+
10
=
15
-
5
=
30
+
12
=
18
-
5
=
25
+
23
=
16
-
10
=
50
-
40
=
30
+
15
=
22
+
20
=
72
-
2
=
60
+
30
=
20
+
28
=
15
-
10
=
11
+
11
=
11
+
8
=
80
-
10
=
91
+
2
=
45
-
5
=