P4345 [SHOI2015]³¬ÄÜÁ£×ÓÅÚ·¸Ä

ÌâÒâ Çó$\displaystyle \sum_^k {n \choose i} \mod 2333$ Ö±½ÓÍÆʽ×Ó£º Áî$p=2333,k=tp+r$ \[ \displaystyle \sum_{i=0}^k {n \choose i} \\ = \sum_{i=0}^{tp+r} {n \cho