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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| 965 - 188 = | 149 + 483 = | 805 - 246 = | 300 - 222 = |
| 389 + 436 = | 685 + 157 = | 841 - 573 = | 155 + 755 = |
| 374 + 357 = | 700 - 134 = | 482 + 389 = | 699 + 151 = |
| 423 + 497 = | 284 + 247 = | 950 - 875 = | 388 + 559 = |
| 312 - 254 = | 250 - 195 = | 400 - 281 = | 134 + 697 = |
| 501 - 256 = | 412 - 387 = | 950 - 382 = | 538 + 183 = |
| 671 - 289 = | 278 + 488 = | 299 + 649 = | 200 - 123 = |
| 588 + 277 = | 451 - 194 = | 485 - 298 = | 137 + 289 = |
| 916 - 368 = | 932 - 546 = | 341 - 186 = | 326 - 178 = |
| 267 + 368 = | 118 + 397 = | 265 + 166 = | 284 + 337 = |
| 137 + 789 = | 267 + 145 = | 962 - 883 = | 804 - 397 = |
| 440 - 299 = | 327 + 597 = | 477 + 247 = | 145 + 575 = |
| 514 - 438 = | 501 - 363 = | 512 - 225 = | 594 + 316 = |
| 168 + 358 = | 264 + 596 = | 403 - 284 = | 321 - 232 = |
消防员爸爸