Philosophy of "Garbage" or "Decoration" Removal
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- Sometimes, problem proposers at competitions are not too creative, and instead of coming up with new ideas, they give a well-known problem a makeover to scare people off. Or whe…
By Kada Williams
- The circles C1C_1C1 and C2C_2C2 with diameters ABABAB and ACACAC, and centers O1O_1O1 and O2O_2O2 respectively, intersect each other at AAA and PPP. The perpendicular to O2P…
By Kada Williams