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Number of squares (1) Time Limit: 10000/5000 MS (Java/others) memory limit: 32768/32768 K (Java/Others) Problem description gives you an N * n checkboard. Each checkboard contains a non-negative number. Take out several numbers from them so that the lattice of any two numbers does not have a public edge. That is to say, the two grids of the obtained number cannot be adjacent and the sum of the obtained numbers is the largest. Input includes multiple

Label: style blog HTTP use AR strong data SP 2014 This error has always occurred when I recently used Ruby libraries.. When using the net/IMAP library or the net/HTTP Library (mainly using HTTPS and HTTPS using SSL), the details are as follows: Error message: e:/ruby200/lib/Ruby/2.0.0/NET/IMAP. RB: 1454: In 'connect': ssl_connect returned = 1 errno = 0 state = SSLv3 read server certificate B: Certifi

The source connection for the most recent use of Ruby-china is not Using Gem Update to encounter this problem, It turns out that Ruby does not contain an SSL certificate, so the link to HTTPS is rejected by the server. The workaround is simple, first download the certificate (HTTP://CURL.HAXX.SE/CA/CACERT.PEM) Here, then set the environment variable in the environment variable and point the value to this file Ssl_cert_file It's settled.http://blog.csdn.net/leorowe/article/details/4