View Compilation Error

0_0_39479032_24808.cpp: In function 'long long int find(long long int*)':
0_0_39479032_24808.cpp:20:30: error: 'd' was not declared in this scope; did you mean 'id'?
   20 |         if(tir[root][id]==0) d==0?id=1:id=0;
      |                              ^
      |                              id
At global scope:
cc1plus.exe: error: '::main' must return 'int'