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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| 440 - 293 = | 612 - 475 = | 500 - 442 = | 295 + 266 = |
| 562 - 377 = | 212 - 158 = | 821 - 169 = | 167 + 576 = |
| 167 + 146 = | 285 + 429 = | 308 - 249 = | 388 + 255 = |
| 167 + 483 = | 723 - 588 = | 564 + 177 = | 397 + 553 = |
| 158 + 172 = | 316 - 277 = | 768 + 154 = | 523 - 299 = |
| 288 + 332 = | 445 + 269 = | 636 - 369 = | 456 + 497 = |
| 660 - 291 = | 433 - 165 = | 199 + 678 = | 328 - 259 = |
| 741 - 275 = | 321 - 257 = | 168 + 253 = | 271 + 569 = |
| 159 + 665 = | 315 - 239 = | 687 + 294 = | 820 - 288 = |
| 374 + 167 = | 312 - 235 = | 350 - 169 = | 560 - 178 = |
| 533 + 299 = | 638 + 177 = | 922 - 535 = | 611 - 569 = |
| 175 + 249 = | 404 - 239 = | 836 - 559 = | 501 - 376 = |
| 563 + 357 = | 185 + 469 = | 182 + 599 = | 520 - 254 = |
| 487 + 278 = | 376 + 486 = | 629 + 284 = | 721 - 646 = |
消防员爸爸