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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| 12 + 12 = | 20 + 68 = | 30 + 37 = | 97 - 53 = |
| 92 - 35 = | 12 + 70 = | 88 - 25 = | 100 - 82 = |
| 89 - 57 = | 84 - 82 = | 40 - 37 = | 78 - 61 = |
| 30 + 39 = | 43 + 19 = | 95 - 32 = | 50 - 22 = |
| 90 - 74 = | 75 - 43 = | 90 - 83 = | 58 + 34 = |
| 84 - 67 = | 28 + 26 = | 81 - 75 = | 66 + 25 = |
| 33 + 56 = | 16 + 52 = | 30 + 59 = | 81 - 25 = |
| 57 + 27 = | 39 + 11 = | 45 - 14 = | 90 - 62 = |
| 98 - 76 = | 51 + 28 = | 94 - 85 = | 82 - 73 = |
| 49 + 49 = | 95 - 90 = | 68 - 31 = | 19 + 15 = |
| 48 + 44 = | 56 + 28 = | 41 + 58 = | 22 + 31 = |
| 62 + 38 = | 59 + 22 = | 100 - 23 = | 68 - 23 = |
| 59 + 32 = | 45 + 43 = |
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