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덧셈: 2 + 2

1

		4	7
		1	0
		5	7

2

		9	6
		1	7
	1	1	3

3

		6	2
		5	4
	1	1	6

4

		2	0
		2	7
		4	7

5

		2	1
		3	5
		5	6

6

		6	6
		2	1
		8	7

7

		1	1
		3	3
		4	4

8

		2	6
		7	2
		9	8

9

		3	5
		5	9
		9	4

10

		5	3
		6	5
	1	1	8

11

		1	0
		7	4
		8	4

12

		2	5
		2	6
		5	1

13

		7	3
		6	3
	1	3	6

14

		2	8
		9	3
	1	2	1

15

		9	7
		4	8
	1	4	5

▲

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