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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| 18 + 13 = | 27 + 25 = | 19 + 12 = | 59 + 14 = |
| 54 + 18 = | 55 + 39 = | 39 + 21 = | 39 + 27 = |
| 49 + 41 = | 77 + 13 = | 28 + 27 = | 46 + 44 = |
| 28 + 18 = | 37 + 19 = | 56 + 44 = | 26 + 16 = |
| 51 + 29 = | 34 + 26 = | 58 + 42 = | 47 + 28 = |