Is this a junior high school math problem? Factorization can only be decomposed to this step)

I have played three Yuri levels in the Red Alert and Soviet War many times, and then summed up a set of gameplay:

1. First control the door-to-door infantry vehicle, go up and kill the two American soldiers (control one, let them kill each other, and then kill the rest), control the engineers to occupy the barracks and laboratories, use all the money to build spies, and follow Yuri and the vehicle to the right along the top.

2. There is a sniper in the small base on the upper right, control him, then let the car blast the fence, go in and control the grizzly bear tank below, and kill the helicopter and machine gun bunker by the way. At this time, three Yuri controlled the sniper, infantry vehicle and grizzly bear tank respectively. Now with these three combat troops, Yuri can find a place to hide.

3. The sniper withdrew from the position and killed all dogs and seal troops outside the central base. Infantry vehicles and grizzly bears go to the small warehouse on the lower right (there is a repair shop there). After eating several boxes (it is an upgrade toolbox), the infantry vehicle and the grizzly bear were upgraded to level 3. At this time, a spy was sent to live in the power plant, and infantry vehicles and grizzly bears rushed into the base to destroy the power plants on both sides (the attack efficiency of level 3 tanks was very high). When the power was restored, the prism tower died.

4. Carefully kill the bodyguards around the president with snipers, then remove the tanks, infantry vehicles and snipers, and send Yuri to control the president and pass the customs!

I haven't played red alert for several years, but the method at this level is still fresh in my memory. According to my method, there is no point in dropping paratroopers. Infantry vehicles and grizzly bears eat boxes to level 3 is the key.

If you need a comprehensive strategy,

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