It looks like a boring problem. At WXC people only tried to search for solutions. Did you try it? |
I did not really try it. I think it needs some boring analysis in number theory. At WXC people have found the minimal K, and guessed A. |
欢迎光临 珍珠湾ART (https://zzwav.com/) | Powered by Discuz! X3 |