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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| 816 - 169 = | 670 - 599 = | 489 + 348 = | 304 - 189 = |
| 961 - 687 = | 287 + 494 = | 750 - 478 = | 458 + 154 = |
| 776 - 499 = | 658 + 275 = | 596 + 214 = | 230 - 195 = |
| 536 - 467 = | 607 - 188 = | 775 - 397 = | 600 - 581 = |
| 733 - 384 = | 250 - 168 = | 225 + 585 = | 610 - 163 = |
| 955 - 886 = | 696 + 169 = | 431 - 287 = | 291 + 439 = |
| 646 - 188 = | 211 - 147 = | 597 + 255 = | 578 + 286 = |
| 676 + 294 = | 189 + 481 = | 944 - 666 = | 628 + 285 = |
| 248 + 287 = | 550 - 296 = | 934 - 258 = | 272 + 249 = |
| 165 + 296 = | 823 - 177 = | 298 + 555 = | 361 + 279 = |
| 304 - 145 = | 765 + 189 = | 154 + 697 = | 299 + 135 = |
| 286 + 255 = | 328 + 596 = | 769 + 173 = | 300 - 199 = |
| 478 + 357 = | 233 - 178 = | 400 - 335 = | 199 + 535 = |
| 670 - 498 = | 448 - 259 = | 244 + 696 = | 596 + 147 = |
消防员爸爸