这容易,将第一个口袋开个洞。 另一种办法就是利用拓扑学的方法,将第二个口袋扎两次就可以做到了。 |
1. Turn the second bag inside out. 2. Pour the beans from the first bag into the second. 3. Tie the second bag at the middle. 4. Flip the second bag outside in. 5. Pour the rice into the second bag. 6. Put the second bag into the first and untie it to let the beans get into the first bag. 7. Tie the second bag right above the rice. 8. Pour beans from the first bag into the second. Done |
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