View Compilation Error

0_0_38799903_20326.cpp: In function 'double cal(int)':
0_0_38799903_20326.cpp:20:25: error: 'p' was not declared in this scope
   20 |                         p += log(cntzi);
      |                         ^
0_0_38799903_20326.cpp:42:17: error: 'p' was not declared in this scope
   42 |                 p += log(cntzi);
      |                 ^