Translate attached document `decimal.pdf` in NOI2016E

`decimal.pdf` in NOI2016E contains important information required to solve the problem. The translator is also requested to check for translation errors in `Output Format` and `Constraints` sections of NOI2016E.
Please find the document attached below -
[decimal.pdf](https://github.com/HydroOJ/Problem-Translation/files/7403394/decimal.pdf)

 