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======2020牛客暑期多校第七场====== [[https://ac.nowcoder.com/acm/contest/5672|比赛链接]] =====A.===== **upsolved by** ====题意==== ====题解==== =====B.===== **solved by 2sozx JJLeo** ====题意==== $t$ 个询问，每个询问包含两个数 $n,m$，问将 $n\times m$ 个数分成最少多少个数使得这些数能够组合成 $n$ 个 $m$ 和 $m$ 个 $n$。$n,m\le 10^4$ ====题解==== 如果 $n=m$ 显然直接分成 $n$ 个 $m$ 最优。否则假设 $n