确实秒；我提供一个笨点的办法
monseigneur
2026-02-04 17:49:42
( reads)
Suppose large rectangle is x wide, y high.
Black area * 2= 3x+4y+(x-4)(y-3) = xy+12=112+12=124
green area = 112-124/2=112-62=50
Suppose large rectangle is x wide, y high.
Black area * 2= 3x+4y+(x-4)(y-3) = xy+12=112+12=124
green area = 112-124/2=112-62=50
贫论贫论
2026-02-05 07:45:19棒！