View Compilation Error

0_0_39485078_11173.cpp: In function 'void dfs_1(long long int, long long int)':
0_0_39485078_11173.cpp:77:47: error: 'pow' was not declared in this scope
   77 |                 ll tmp = d1[to[i]] + 1 + ((ll)pow(2, m) - 1) * (degree[to[i]] - 1);
      |                                               ^~~
0_0_39485078_11173.cpp: In function 'int main()':
0_0_39485078_11173.cpp:117:46: error: 'pow' was not declared in this scope
  117 |                         cout << d + 1 + ((ll)pow(2, m) - 1) * (degree[1] - 1) << "\n";
      |                                              ^~~