The next day, when Chiba and Gray Yuan came to the classroom, they were immediately surrounded by other students, and they asked the same question in a gossiping manner.

"Did you just come back from Matsumoto?"

“？” Qian Yu was stunned. "How- why do you feel that?"

"What they said!" One of the classmates pointed to Yuantai not far away. "They said you went to Matsumoto before."

"Forehead ......" Qianyu held his forehead and looked at the radiant Yuan Tai and the others.

By the way, how can these guys be so spirited? The reason why he and Gray Yuan Ai can still come to school now is because he used the auxiliary unit to dispel the drowsiness, and Gray Yuan Ai drank a large cup of coffee - Originally, Qian Yu and Gray Yuan Ai were going to take leave to make up for a day's sleep at home, but Gray Yuan Ai thought that this would destroy the rhythm of the biological clock, so Qian Yu could only be woken up in the morning by the alarm that sounded when the auxiliary unit touched into the room, and came to school with him.

Forehead...... It seems that while they were following Gregory around to investigate, the guys were in the hotel with ...... Could it be that they have already caught up on sleep in advance?

With a sigh, Qian Yu nodded. "Yes, we went to Matsumoto City ......"

"Something big seems to be going on over there?" Another asked. "Today's news is saying that there are symptoms of poisoning in Matsumoto City!"

"......" Qian Yu hesitated for a moment, but still shook his head. We don't know. ”

There's no need to talk to these kids...... Although they will be exposed to these strange things sooner or later, it is better to keep a little more of their good childhood, and a little more of it.

"Sooner or later, they'll know, won't they?" After glancing at it and confirming that Conan was not there, he said as he opened his school bag. "We are accustomed to lying to children with love and lies, and how can we hide this dark scene? How can you say sorry when the war burns down the building block wall? Some darkness is destined to be unstoppable. ”

Whether those who release sarin have thought about it or not, the Pure Land of Bliss that belongs to the children has been polluted, and the lives of these children have been forever distorted by these terrorists. Hospitals may be able to heal the body, but they can't heal the heart. Counseling may cover up wailing, but it can't cover grief.

"There has never been a value that can be completely forgiven," Chiba sighed. "Exporting their own values to each other, but still claiming to be noble. Spread terror thousands of miles away and nourish nightmares. The panic that pervades other people's surroundings will return sooner or later. It's a pity that these thugs will never know. ”

…………

"Huh?" Except for Chiba and Ash Hara (Conan didn't come because he was too sleepy), everyone made a sound of surprise.

"I'm sorry," Sumiko Kobayashi said to everyone with an apologetic smile. "It's been so long since classes were suspended, and I still need to take my final exams early...... But there is no way, the various accidents in the school some time ago caused us to have to take into account the potential risks, so it had to be dealt with thoroughly with a long vacation. But don't worry, we've already taught you everything, so you'll be able to pass the exam with just a little revision! ”

"......" Qian Yu and Gray Yuan Ai exchanged a look, and there was an indifferent look in their eyes - for them, this level of exam, even if they take it at any time, it is only a salted fish difficulty, and they can enter the holiday early if they take the exam a little earlier.

But...... If that's the case, why postpone the Games until now? Originally, the sports day at the end of May did not have much impact on the final exams in mid-July, but the sports meeting at the end of June had a lot of impact on the final exams in early July...... Those little guys probably won't be able to handle it, right?

……

"Forehead......" In the living room, Qian Yu put down Yuan Tai's mouth and pinched the bridge of his nose in despair. You ......"

"Didn't you expect this to happen?" Ashbara, who was teaching Ayumi kanji (80 kanji is required to be learned in the first grade of Japanese elementary school), took a sip of tea very calmly and said leisurely. "Since I have agreed to their request for tutoring, I must be mentally prepared for this."

"I'm mentally prepared, but ......" Qianyu sighed and showed the mouth slip to Gray Plains. See for yourself...... I don't really want to say anything. ”

"Huh?" Gray Yuan Ai glanced at the small note in Qian Yu's hand - although the distance between them was about a meter or so, Gray Yuan Ai could still see the formula on it clearly. "Uh......"

"You're speechless, aren't you?" Qian Yu sighed. "And the bottom line is that I don't know how to improve on both of them...... I've never had a problem with oral arithmetic......"

Qianyu has shown very strong thinking skills since she was a child, and her mental arithmetic ability is among the top among all children in tissue training. The amount of calculation required for the regular questions of the University of Tokyo Introductory Mathematics Examination is completely within his mental arithmetic ability, and he doesn't even need paper and pen to do this kind of question, and he can directly get the answer to the question through the most direct longitudinal thinking.

"Then tell him the most basic skills," Gray Yuan said helplessly. "Even if humans can't have the same computing efficiency as computers, they can still learn some knowledge from the computing patterns of computers."

"I see......" Chiba shook her head and resumed her work as if she had been resigned. That one...... First of all—"

When he said this, Qian Yu's eyes suddenly lit up. "Wait a minute, maybe you can really use the logic loop pattern ......"

“？” Gray Plains looked at Qian Yu with some strange eyes.

"That," Chiba scribbled on a piece of paper. "Yuantai, Mitsuhiko, look at this."

“？” Motota and Mitsuhiko looked at the small note written by Chiha.

What Qian Yu wrote was not a formula or a trick, but a text version of a logical judgment program - the first grade was not exposed to any difficult mathematics, at most two digits minus one digit, so this simple formula was enough to cope.

Decide group 1 - which is larger than the unit of the subtracted number or the unit of the subtraction

Outcome 1: The unit of the subtracted number is larger than the unit of the subtraction or both are equal – turn to Result 1

Result 2: The unit of the subtracted number is smaller than the unit of the subtraction – moving on to Result 2

Result Equation 1 – the ten digits of the subtracted number are reserved, and the unit digit is the unit of the subtracted number minus the unit of the subtracted number

Result Equation 2 – the decrement of the decrement is subtracted by one, and the single digit is ten minus the unit of the subtraction plus the unit of the subtracted number.

Qian Yu tilted his head. "This is a formula that explains how to do oral arithmetic slips in principle."

"It's so complicated......" Yuan Tai stared at the paper for a long time, but in the end, he just looked at Mitsuhiko with a confused face.

"Can't you even understand this!!???

An almost helpless roar struck every wall of the Orange Mansion.