摘要: /* MOD must be a prime. if not, don't use inv() */ const int MOD = 1e9 + 7; struct ModularIntegers { #define mint ModularIntegers int num; mint() { nu 阅读全文
posted @ 2021-06-01 20:49 purinliang 阅读(81) 评论(0) 推荐(0) 编辑