摘要:
/* Migrated from Lutece 99 Fly Through Description The home of flower fairies is being devastated by a monster called Littlefatcat. They have to leave 阅读全文
摘要:
/* Migrated from Lutece 759 倒推数组 Description 我们给出一个奇怪的公式: f(a)=∑(i=1,n)∑(j=1,n)min(a_i,a_j)其中min(x,y) 表示x,y中的较小值。如果你对求和符号不太熟悉,我们也可以写成程序语言的形式: int f = 阅读全文