如果输入的a,b,c超过了30,那么访问$f[a][b][c]$会下标越界
by One_Zzz6174 @ 2021-03-02 19:44:01
**保证输入的数在[-9223372036854775808,9223372036854775807][−9223372036854775808,9223372036854775807]之间,并且是整数。**
by 地狱石QAQ @ 2021-03-02 19:51:45