Add up to 20
Addition of two numbers with sum up to 20
12
+
7
1
+
1
8
+
5
3
+
1
10
+
9
9
+
7
10
+
5
6
+
14
4
+
5
7
+
4
1
+
15
2
+
6
4
+
16
1
+
1
3
+
6
7
+
9
1
+
5
9
+
9
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v0.32.0 (production)