View Compilation Error

0_0_39485073_26292.cpp: In function 'void dfs_1(long long int, long long int)':
0_0_39485073_26292.cpp:76:47: error: 'pow' was not declared in this scope
   76 |                 ll tmp = d1[to[i]] + 1 + ((ll)pow(2, m) - 1) * (degree[to[i]] - 1);
      |                                               ^~~
0_0_39485073_26292.cpp: In function 'int main()':
0_0_39485073_26292.cpp:100:17: error: 'memset' was not declared in this scope
  100 |                 memset(vis, 0, sizeof(vis));
      |                 ^~~~~~
0_0_39485073_26292.cpp:5:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    4 | #include<algorithm>
  +++ |+#include <cstring>
    5 | #define ll long long
0_0_39485073_26292.cpp:116:44: error: 'pow' was not declared in this scope
  116 |                         cout << d+1 + ((ll)pow(2, m) - 1) * (degree[1] - 1)  << "\n";
      |                                            ^~~