why "[]" operands is not working with vectors?

Question

my line of code

vector<int>::iterator ti = find(p.begin(),p.end(),p[it]);

error:

"no operator \"[]\" matches these operands -- operand types are: std::vector<int, std::allocator<int>> [ std::_Vector_iterator<std::_Vector_val<std::conditional_t<true, std::_Simple_types<int>, std::_Vec_iter_types<int, size_t, ptrdiff_t, int *, const int *, int &, const int &>>>> ]",
"startLineNumber": 15,
"startColumn": 56,
"endLineNumber": 15,
"endColumn": 56
}

Answer 1

What is 'it' in p[it]? Error says 'it' is not int. Please share some more code snippet.

Answer 2

I didn't found find call