The north wind blows, and the snowflakes drift.

Outside there was heavy snowfall, and the indoor heating was adequate.

In the Number Theory Teaching and Research Office of the Yan University School of Mathematics, Shen Nuofei took a breath on the glass, and his dexterous fingers drew a string pattern: "Mom, do I have a rock sugar gourd in my stomach?"

Ou Ye shook his head: "Of course not. ”

Shen Nuofei blinked and asked expectantly, "Can there be one?"

Burst~

The people in the office were happy to keep their mouths shut.

Ou Ye pinched Shen Nuofei's face, and she also smiled: "You little girl, why are there so many routines?

"Hee-hee. Shen Nuofei grinned, she wanted to eat rock sugar gourd, I heard that Daxue and rock sugar gourd are the best match.

"Nofi waits, I'll go buy you rock sugar gourds. Huang grabbed his down jacket and prepared to go out.

Shen Nuofei smiled: "Mmmm, thank you Uncle Huang." ”

Xiao Huang, a doctoral student in the School of Mathematics, protested: "Nofi, I'm not an uncle, I'm your brother!"

Shen Nuofei said: "But if you call my mother Sister Ye, then I will call you Uncle Huang." ”

"You little clever ghost, what you say is really reasonable!" Xiao Huang was speechless, so he went out to buy rock sugar gourds.

Experiment 2 was on winter vacation, and Aunt Cuiping went back to her hometown to run errands in the past two days, so Ou Ye took Nophi to the number of hospitals, working and taking the baby at the same time.

It's quite cold outside, and it's not convenient for Ou Ye, who is three months pregnant, to go out to buy rock sugar gourds, so the sensible Xiao Huang takes the initiative to do it for her.

Lao Wang, the former director of the Department of Number Theory of the Academy of Mathematics, was hospitalized for a long time due to prostate disease, and he was transferred to other positions, and he may be retiring after a year and a half.

Ou Ye was indisputably promoted to the head of the Department of Number Theory, and she calmly organized the work arrangements of the department before the Spring Festival holiday.

Prostate disease is on the rise of men, with more than 1 million men dying from prostate cancer each year.

Xiao Huang's doctoral supervisor Lao Wang was no longer able to fight in the front-line work of mathematics, and Xiao Huang naturally and returned to Ou Ye's command as he wished. After all, it is physiologically impossible for Ouye to suffer from prostate disease.

Xiao Huang quickly bought back the rock sugar gourd, and Shen Nuofei ate it happily.

"Nofi, are you going to participate in the Spring Festival Cup semi-finals tomorrow?" asked Xiao Huang.

Shen Nuofei nodded: "Yes." ”

"Then your Uncle Huang will give you a few questions. Xiao Huang rolled up his sleeves and looked more active than Shen Nuofei.

"Hey, Xiao Huang, did you participate in the Spring Festival Cup when you were in elementary school?" asked Lao Xia, a colleague in his thirties.

Xiao Huang replied: "I have never participated in the Spring Festival Cup, but I won the gold medal in the CMO national final when I was a middle school student. ”

Lao Xia asked rhetorically: "Who in this office hasn't won the CMO gold medal? I also entered the training squad of the Olympiad national team back then, but unfortunately, I was only a little bit away from going to the IMO arena to win glory for the country." ”

Ou Ye raised his hand: "Report to the organization, I didn't win the CMO gold medal, I won the silver medal, I was lucky to enter the Golden Autumn Camp of Yan University that year, and I was lucky to be sent to Yan University Mathematics Academy." ”

Lao Xia was a little surprised, and then said: "Director Ou's silver medal is better than the gold medal." ”

"Lao Xia, it's too much, it's too obvious. Ou Ye laughed.

"I mean, not only have I participated in the CMO, but I have also participated in three consecutive Spring Festival Cups in the fourth, fifth and sixth grades, and I should be the most experienced in the primary school math competition, right? "Lao Xia is full of energy.

Xiao Huang was not convinced: "Lao Xia, you went to elementary school many years ago, and the question bank of today's primary school mathematics competition has been updated several rounds! ”

In order to compete for Shen Nuofei's right to bet, Lao Xia and Xiao Huang quarreled.

The two did not give in to each other, so they bet on their own questions, and bet that whoever bets on the accuracy of the question is low, and who invites all the members of the number theory teaching and research department to have a big meal.

Everyone's family background and upbringing environment are different.

The Department of Number Theory at Yanda University is a scene in Shen Nuofei's growth environment.

The people who grew up with Shen Nuofei, in addition to her parents, there are also CMO gold medalists such as Xiao Huang and Lao Xia.

Shen Nuofei's educational environment can be described as the best of all families.

Xiao Huang bet on ten questions, and Lao Xia also bet on ten questions.

As a mother, how could Ou Ye be indifferent, she also bet on ten questions.

Coupled with the ten questions of Shen Qi and the ten questions of the instructor of the second pomegranate math class, Shen Nuofei came to the examination room of the fifth grade group of the Spring Cup semi-final.

Unlike the computer-based test, which is full of multiple-choice questions in the preliminary round, the semi-final is a written test with no multiple-choice questions.

There are 24 students in Shen Nuofei's classroom, including 20 students in the age group of 11~12 years old, three students in the age group of 7~10 years old, and one person in the age group of 5~6 years old.

There are not many children who show that they are above their peers in a certain subject area, and children under the age of 10 come to the fifth grade group to participate in the semi-finals of the Spring Festival Cup, and their strength in mathematics surpasses that of other children under the age of 10.

The invigilator is not surprised, and the students who participate in the semi-finals here are treated equally, regardless of age.

When you get the test paper, read the whole paper from beginning to end...... This is the advice of his parents, and Shen Nuofei keeps it in mind.

Browsing the complete volume, Shen Nuofei was pleasantly surprised.

Yikes!

Yaoooo

These topics are so familiar!

The first question, grandpa and grandma have a total deposit of 9,600 yuan in the bank, if the two of them each withdraw 40% of their deposits, and then take out 120 yuan from grandpa's deposit to grandma, then grandpa's and grandma's money is equal, then grandma's deposit is _____.

Shen Nuofei quickly remembered Uncle Huang's question, which was that his parents had deposited 18,000 yuan, and after some withdrawal operations, his father and mother's money were equal, and he asked his mother how much money she had saved.

Regardless of whether it is grandparents or parents, the principle of solving the problem is the same, and the equation is good.

Within a minute, Shen Nuofei calculated the result on the scratch paper, and grandma's deposit was 3,000 yuan, and then filled in the answer to the test paper.

Of course, the first question is a warm-up question and a score question, which is relatively simple.

Even if Uncle Huang didn't bet on this question, Shen Nuofei could use the right method to find the correct answer, which was nothing more than spending more time.

The second question is more similar to Uncle Xia's question.

The third question, isn't this the question from Mr. Liu?

Fourth, my mother told me about it!

The fifth question, this question is almost exactly the same as the question from my father, except that Xiao Ming and Xiao Hong have been replaced by Li Lei and Han Meimei.

Question 6......

Shen Nuofei quickly gave the answer, and she vaguely felt that the betting team behind her was too powerful!

Under the guidance of this terrifying betting team, as long as you are not a big fool, anyone can get full marks!

But Shen Nuofei also felt a sense of loss, it didn't look like she was participating in a math competition, it was more like her parents, her pomegranate math class instructor, and her Uncle Huang and Uncle Xia were participating in the competition.