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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| 59 - 38 = | 59 - 28 = | 100 - 81 = | 13 + 72 = |
| 90 - 89 = | 98 - 64 = | 38 - 17 = | 21 + 46 = |
| 56 + 38 = | 93 - 75 = | 43 + 31 = | 74 - 21 = |
| 48 + 46 = | 47 + 23 = | 53 - 35 = | 68 - 13 = |
| 98 - 23 = | 48 + 43 = | 22 + 77 = | 68 - 27 = |
| 71 - 69 = | 100 - 49 = | 21 + 36 = | 15 + 81 = |
| 34 + 29 = | 39 - 14 = | 12 + 47 = | 92 - 83 = |
| 13 + 13 = | 21 + 17 = | 72 - 56 = | 77 - 76 = |
| 71 - 63 = | 49 + 12 = | 85 - 71 = | 49 - 18 = |
| 59 + 11 = | 99 - 47 = | 20 + 57 = | 100 - 99 = |
| 92 - 41 = | 33 - 16 = | 90 - 52 = | 12 + 87 = |
| 57 + 19 = | 42 - 26 = | 49 + 35 = | 51 - 37 = |
| 50 - 31 = | 47 + 15 = | 41 - 13 = | 65 - 58 = |
| 28 - 12 = | 49 + 37 = | 48 + 33 = | 73 - 14 = |
| 69 + 13 = | 13 + 53 = | 12 + 73 = | 59 + 34 = |
| 72 - 33 = | 39 + 32 = | 13 + 65 = | 99 - 58 = |
| 84 - 51 = | 30 + 48 = | 23 + 17 = | 89 - 87 = |
| 96 - 77 = | 29 + 30 = | 47 + 44 = | 71 - 55 = |
| 69 + 31 = | 76 - 73 = | 48 + 48 = | 97 - 54 = |
| 60 - 53 = | 54 + 35 = | 64 - 11 = | 27 + 27 = |
| 49 + 42 = | 45 + 45 = | 98 - 84 = | 42 + 41 = |
| 50 + 49 = | 57 + 28 = | 59 - 36 = | 56 - 15 = |
| 38 + 14 = | 76 + 24 = | 83 - 79 = | 21 + 67 = |
| 12 + 64 = | 55 + 22 = | 12 + 12 = | 76 - 19 = |
| 47 - 28 = | 39 + 22 = | 84 - 78 = | 14 + 63 = |
消防员爸爸