In the year 5202 of the Ham Calendar, a major discovery rocked the archaeological community of Planet Ham: an archaeological team unearthed the ruins of an ancient Earth civilization 114,514 light-years away. It is speculated that the site was once an institution of higher learning for the ancient Earth civilization. Among the artifacts, the most interesting was an ancient USB flash drive. After being transported back to Planet Ham and repaired by Ham Technology Co., Ltd., it was surprisingly possible to read the data normally. After analysis, experts from the archaeological team reached a shocking conclusion: the USB drive actually contained a master's thesis from ancient Earth! A Ham-month later, Professor Daoli of the Department of Archaeology at Ham University published a paper titled "Archaeological Analysis of the Impact of Academic Behavior on Planetary Civilization in Ham and Ancient Earth," revealing to the people of Ham the ancient Earth civilization hidden behind this thesis.

"Archaeological Analysis of the Impact of Academic Behavior on Planetary Civilization in Ham and Ancient Earth" points out that in the thesis unearthed from ancient Earth, a large number of words appeared that had never been found in previously unearthed documents or had significantly different meanings. For example, "被破" (which Professor Daoli believes may be synonymous with "被迫" [forced]), "纬度" (which may be synonymous with "维度" [dimension]), and "获奖" (which may be synonymous with "或将" [or will]) have enriched the dictionary of ancient Earth language on Planet Ham.

"Archaeological Analysis of the Impact of Academic Behavior on Planetary Civilization in Ham and Ancient Earth" points out that it can be seen from the thesis unearthed from ancient Earth that more than twenty years before the publication of the thesis, ancient Earth had already promulgated the "Divorce Law," demonstrating the legal system of ancient Earth.

"Archaeological Analysis of the Impact of Academic Behavior on Planetary Civilization in Ham and Ancient Earth" points out that it can be seen from the thesis unearthed from ancient Earth that the mathematical system commonly used by the ancient Earth civilization may be significantly different from the mathematical system currently used on Planet Ham, such as $134063 + 345410 = 82900$, $5230 + 5287 = 10519$, $5510 + 5354 = 10867$, etc. Professors in the Department of Mathematics at Ham University are currently unable to provide a reasonable mathematical explanation.

"Archaeological Analysis of the Impact of Academic Behavior on Planetary Civilization in Ham and Ancient Earth" concludes that the unearthing of the ancient Earth thesis is of great significance to the study of ancient Earth history, and the veil of the ancient Earth civilization is being lifted.

You are a freshman in the class of 5202 at Ham University. You have enrolled in a course called "Ancient Earth Language (Second Alien Language) (1)" in the autumn semester and are currently taking the final exam for this course. Given the recently unearthed ancient Earth thesis of great significance, this exam uses this thesis as reading material.

In the exam, there is a type of question called cloze test: the teacher removes a word from the original text and provides four possible options. Students need to choose one of the options to fill in the blank to make the sentence smooth.

There is now a cloze test question:

"...In this paper, it is found that the level of education, the difference in the relative income level of the husband, and different fertility situations all have an impact on domestic violence ___."

A. 被破 B. 获奖 C. 纬度 D. 遭成

After careful consideration, which option would you choose?

Input

Read data from standard input. There is no input.

Output

Output to standard output. Output a single letter on one line, representing the option you believe is correct. For example, if you think the answer is "A. 被破", please output A.

Note

Please use your strong foundation in ancient Earth language to answer this question!