跟着消防员爸爸学习C++编程与算法（请备注算法学习）
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| 11 + 58 = | 35 - 14 = | 40 - 38 = | 42 + 29 = |
| 55 - 42 = | 99 - 84 = | 60 - 51 = | 99 - 91 = |
| 53 + 34 = | 90 - 14 = | 26 + 25 = | 70 - 63 = |
| 35 + 53 = | 89 - 88 = | 96 - 32 = | 22 + 77 = |
| 58 + 42 = | 78 + 22 = | 59 + 33 = | 50 - 36 = |
| 31 + 51 = | 32 + 19 = | 68 + 26 = | 37 + 34 = |
| 39 + 36 = | 11 + 88 = | 95 - 68 = | 92 - 54 = |
| 14 + 14 = | 82 - 66 = | 88 - 77 = | 48 + 17 = |
| 68 + 14 = | 15 + 80 = | 68 + 23 = | 85 - 63 = |
| 76 - 11 = | 11 + 48 = | 35 + 32 = | 60 - 41 = |
| 89 - 55 = | 30 - 25 = | 59 + 28 = | 22 + 67 = |
| 78 - 37 = | 93 - 84 = | 88 - 74 = | 90 - 82 = |
| 88 - 49 = | 50 + 44 = |
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