1+2
3
10-8
2
20+0
20
100+100
200
12+10
22
22-15
7
0+0
0
320+120
440
6+5
11
15-15
36-10
86-84
9+8
17
45-15
30
17-16
1
150+150
300
5+15
18-15
100-90
10
500+500
1000
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