0_0_39440190_12118.cpp: In function 'int main()':
0_0_39440190_12118.cpp:28:20: error: invalid operands of types 'int [2001]' and 'int' to binary 'operator%'
28 | ans%=mod; // 注意整道题取模
| ~~~^~~~~
0_0_39440190_12118.cpp:28:20: note: in evaluation of 'operator%=(int [2001], int)'
|