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 + 7 × 8 = | 59 + 6 × 4 = | 2 × 9 + 50 = | 8 × 2 + 63 = |
| 4 × 9 - 18 = | 15 + 5 × 4 = | 4 × 4 - 15 = | 5 × 7 + 26 = |
| 42 + 3 × 9 = | 6 × 7 + 34 = | 21 + 9 × 5 = | 95 - 7 × 7 = |
| 40 + 6 × 4 = | 65 - 4 × 7 = | 81 + 6 × 3 = | 5 × 9 - 13 = |
| 8 × 2 + 54 = | 54 - 5 × 3 = | 6 × 4 + 66 = | 68 + 6 × 4 = |
| 8 × 4 + 55 = | 8 × 5 - 18 = | 5 × 4 + 31 = | 6 × 5 - 27 = |
| 4 × 5 - 17 = | 72 - 8 × 6 = | 55 + 2 × 5 = | 9 × 6 - 17 = |
| 7 × 3 + 21 = | 14 - 3 × 4 = | 4 × 4 + 23 = | 4 × 3 + 27 = |
| 60 - 7 × 2 = | 69 + 4 × 6 = | 9 × 5 + 50 = | 21 + 7 × 7 = |
| 83 - 8 × 9 = | 92 - 9 × 5 = | 68 - 7 × 6 = | 37 + 8 × 7 = |
| 8 × 5 + 42 = | 68 - 6 × 8 = | 3 × 4 + 53 = | 3 × 9 - 22 = |
| 5 × 5 - 11 = | 80 - 6 × 4 = | 6 × 4 - 16 = | 97 - 6 × 5 = |
| 7 × 6 + 56 = | 6 × 3 - 15 = | 92 - 4 × 9 = | 3 × 4 + 52 = |
| 37 + 4 × 7 = | 44 + 3 × 6 = | 34 + 7 × 9 = | 42 - 9 × 2 = |
| 7 × 9 - 53 = | 33 + 3 × 9 = | 40 - 5 × 4 = | 4 × 3 - 10 = |
| 62 + 4 × 3 = | 51 + 9 × 5 = | 71 - 5 × 7 = | 6 × 6 + 60 = |
| 8 × 2 + 56 = | 9 × 4 - 16 = | 3 × 9 - 12 = | 8 × 3 + 69 = |
| 48 + 3 × 7 = | 6 × 9 - 34 = | 59 + 2 × 5 = | 3 × 7 + 47 = |
| 7 × 2 - 11 = | 26 + 8 × 9 = | 28 + 8 × 2 = | 5 × 4 - 15 = |
| 5 × 3 - 11 = | 63 - 7 × 8 = | 4 × 9 + 32 = | 28 + 7 × 7 = |
| 8 × 2 - 14 = | 8 × 9 + 12 = | 20 + 6 × 2 = | 8 × 3 - 17 = |
| 2 × 7 - 12 = | 83 - 4 × 6 = | 91 - 9 × 9 = | 57 - 7 × 6 = |
| 8 × 6 - 39 = | 52 + 5 × 7 = | 6 × 8 + 30 = | 75 - 2 × 8 = |
| 69 - 9 × 7 = | 34 - 5 × 5 = | 11 + 8 × 4 = | 11 + 2 × 8 = |
| 99 - 2 × 7 = | 94 - 7 × 2 = | 23 - 2 × 6 = | 24 + 5 × 9 = |
消防员爸爸