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一个月前，异地的女朋友突然和我说，亲爱的，我买了3000的photoshop网络课程 我心里想：......，不会找我啊，花这么多的钱，/(ㄒoㄒ)/~~，我的gtx2060！但我嘴上只能说：既然已经买了，那你要好好学习，学完了可以给自己ps了，:-)。然而事情还远远没有结束…. One day， 阅读全文
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很多时间超限的问题都与素数有关 #include <stdio.h>#define maxn 1000000//根据题意大概估算范围；int prime[maxn];void get_prime(){ for(int i=2;i<maxn;i++) { if(!prime[i]) { for(int 阅读全文
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Gargari is jealous that his friend Caisa won the game from the previous problem. He wants to prove that he is a genius. He has a n × n chessboard. Eac 阅读全文
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Little Joty has got a task to do. She has a line of n tiles indexed from 1 to n. She has to paint them in a strange pattern. An unpainted tile should 阅读全文