View Compilation Error

0_0_39056705_18550.cpp: In function 'int query(int, int, int)':
0_0_39056705_18550.cpp:56:17: error: 'resSum' was not declared in this scope
   56 |                 resSum+=tree[i].sum;
      |                 ^~~~~~
0_0_39056705_18550.cpp:57:17: error: return-statement with no value, in function returning 'int' [-fpermissive]
   57 |                 return ;
      |                 ^~~~~~
0_0_39056705_18550.cpp: In function 'int main()':
0_0_39056705_18550.cpp:78:41: error: 'resSum' was not declared in this scope
   78 |                         printf("%lld\n",resSum);
      |                                         ^~~~~~