View Compilation Error

0_0_39536862_14199.cpp: In function 'int trans(int, const std::string&)':
0_0_39536862_14199.cpp:29:34: error: 'm' was not declared in this scope
   29 |        ans = (ans * 3 + ar[i]) % m; // Apply modulo here to keep the value within range
      |                                  ^