@[yangyibangyi](/space/show?uid=90593) **详见NOIP2016D1T1组合数问题**
by Takanashi_Rikka @ 2018-04-29 21:37:16
[ P1118 [USACO06FEB]数字三角形](https://www.luogu.org/problemnew/show/P1118)
by WSEDSWZD @ 2018-04-29 21:49:44
@[yangyibangyi](/space/show?uid=90593) https://www.luogu.org/problemnew/show/P3746 杨辉三角形矩阵加速优化求组合数
by chen_zhe @ 2018-04-29 22:32:59