10. sum of two numbers
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1
1
2
0
0
0
0
0
0
0
0
1
2
0
0
0
0
0
0
0
3
2
5
4
0
0
0
0
0
0
0
0
5
4
0
0
0
0
0
0
0
9
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
3
7
0
0
0
0
0
0
0
0
3
7
0
0
0
0
0
0
0
10
5
9
9
0
0
0
0
0
0
0
0
9
9
0
0
0
0
0
0
0
18
0
0
1
2
3
4
5
6
7
8
9