2-2
0
4+2
6
10+10
20
2+3
3+2
3+2+1
7-6
1
5+5
10
50
9+5
5+9
5+3+4
12
13-9
4
9+8
17
10+70
80
10+9
9+10
6+7+8
21
11-5
20+5
25
40+50
90
6+7
7+6
10+4+5
19
20-9
11
100+100
20+60
11+11
20+50+30
100
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