2020年2月1日
CodeForces1288 C.Two Arrays(dp/组合数学)
摘要： C.Two ArraysYou are given two integers n and m. Calculate the number of pairs of arrays (a,b) such that: the length of both arrays is equal to m;each 阅读全文
posted @ 2020-02-01 11:49 FZU_LH 阅读(199) 评论(2) 推荐(0)