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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| 98 - 39 = | 41 - 13 = | 90 - 35 = | 81 - 23 = |
| 81 - 75 = | 82 - 73 = | 57 - 39 = | 100 - 48 = |
| 85 - 19 = | 92 - 79 = | 91 - 76 = | 91 - 83 = |
| 61 - 45 = | 92 - 74 = | 60 - 34 = | 92 - 44 = |
| 73 - 15 = | 64 - 46 = | 100 - 12 = | 95 - 87 = |
消防员爸爸