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덧셈: 2 + 1

1

		1	8
			3
		2	1

2

		5	2
			5
		5	7

3

		6	2
			3
		6	5

4

		2	1
			1
		2	2

5

		3	0
			4
		3	4

6

		4	1
			5
		4	6

7

		5	2
			5
		5	7

8

		8	4
			2
		8	6

9

		5	2
			1
		5	3

10

		2	6
			3
		2	9

11

		7	8
			3
		8	1

12

		2	3
			1
		2	4

13

		7	3
			2
		7	5

14

		2	9
			5
		3	4

15

		8	5
			1
		8	6

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