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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| 159 + 391 = | 825 - 259 = | 175 + 495 = | 179 + 584 = |
| 700 - 289 = | 366 - 198 = | 497 + 373 = | 271 - 184 = |
| 458 + 469 = | 447 + 484 = | 318 + 493 = | 424 + 397 = |
| 414 - 385 = | 820 - 558 = | 601 - 574 = | 196 + 219 = |
| 604 - 248 = | 287 + 374 = | 303 - 245 = | 244 - 157 = |
| 446 + 366 = | 146 + 769 = | 279 + 633 = | 910 - 355 = |
| 746 + 197 = | 149 + 189 = | 546 + 198 = | 247 + 488 = |
| 621 - 243 = | 447 - 288 = | 279 + 585 = | 702 - 396 = |
| 199 + 344 = | 237 + 283 = | 536 + 177 = | 932 - 357 = |
| 197 + 728 = | 612 - 375 = | 469 + 459 = | 146 + 296 = |
| 516 - 157 = | 546 + 184 = | 298 + 198 = | 240 - 199 = |
| 350 - 264 = | 631 - 356 = | 710 - 223 = | 302 - 178 = |
| 606 - 447 = | 287 + 569 = | 920 - 691 = | 401 - 316 = |
| 200 - 154 = | 910 - 129 = | 198 + 496 = | 742 - 365 = |
消防员爸爸