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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| 49 + 49 = | 38 + 36 = | 49 + 43 = | 42 + 39 = |
| 28 + 12 = | 59 + 41 = | 15 + 15 = | 39 + 24 = |
| 48 + 23 = | 48 + 48 = | 69 + 11 = | 27 + 26 = |
| 68 + 32 = | 48 + 44 = | 48 + 42 = | 23 + 18 = |
| 58 + 34 = | 39 + 38 = | 64 + 36 = | 79 + 21 = |