Legend has it that there are two cunning thieves. Let's call them 65 and 35. They stole countless money by virtue of their cleverness. Therefore, the special police of 16 police station was responsible for arresting him, and the clever and witty 16 police quickly arrested him and "invited" him to prison. In order to prevent them from escaping, the police 16 specially guarded them. 65× 16+35× 16=(65+35)× 16

The two thieves regretted it. When their families came to visit the prison, they cried bitterly. There is no regret medicine in the world, and they have all become prisoners. Of course, the police have to follow them one by one and watch them visit the prison. (65+35)× 16=65× 16+35× 16

Good policemen like 16 are not uncommon. Of course, not all thieves can be successfully caught, and some of them are good at using "smoke screens". You see: 79× 2 1+2 1, police 2 1 trying to catch two thieves, they found a circle and only caught one thief. Where is the other one? It turned out that he was hiding under the nose of the police, that is, 2 1 is 2 1× 1. No wonder it is hard to find! Evil is invincible, but the clever and wise police caught him, locked them up and guarded 2 1× (79+ 1). Look again: 102× 15, the police tried to catch the thief, but they couldn't find the thief at all. Do you know how thieves disguise themselves? It turned out that they were disguised as 102, but in fact they were two thieves, 100 and 2. You see, 2 is not hiding behind 100.