View Compilation Error

0_0_38711467_27050.cpp: In function 'void work()':
0_0_38711467_27050.cpp:11:13: error: 'strlen' was not declared in this scope
   11 |     int n = strlen(a + 1), m = strlen(b + 1);
      |             ^~~~~~
0_0_38711467_27050.cpp:2:1: note: 'strlen' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    1 | #include <iostream>
  +++ |+#include <cstring>
    2 | 
0_0_38711467_27050.cpp:12:5: error: 'memset' was not declared in this scope
   12 |     memset(f1, 0, sizeof(f1));
      |     ^~~~~~
0_0_38711467_27050.cpp:12:5: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
0_0_38711467_27050.cpp:15:29: error: 'm' was not declared in this scope
   15 |         for(int j = 1; j <= m; j++) {
      |                             ^
0_0_38711467_27050.cpp:24:23: error: 'm' was not declared in this scope
   24 |     printf("%d\n", f1[m]);
      |                       ^