main.cpp: In function 'int main()':
main.cpp:48:27: error: 'Find' was not declared in this scope
             auto my_res = Find(val, v.begin(), v.end());
                           ^~~~
main.cpp:48:27: note: suggested alternative: 'rand'
             auto my_res = Find(val, v.begin(), v.end());
                           ^~~~
                           rand
main.cpp:67:27: error: 'Find' was not declared in this scope
             auto my_res = Find(res, tests.begin(), tests.end());
                           ^~~~
main.cpp:67:27: note: suggested alternative: 'rand'
             auto my_res = Find(res, tests.begin(), tests.end());
                           ^~~~
                           rand
main.cpp:83:27: error: 'Find' was not declared in this scope
             auto my_res = Find(val, ll.begin(), ll.end());
                           ^~~~
main.cpp:83:27: note: suggested alternative: 'rand'
             auto my_res = Find(val, ll.begin(), ll.end());
                           ^~~~
                           rand
main.cpp:101:27: error: 'Find' was not declared in this scope
             auto my_res = Find(res, tests.begin(), tests.end());
                           ^~~~
main.cpp:101:27: note: suggested alternative: 'rand'
             auto my_res = Find(res, tests.begin(), tests.end());
                           ^~~~
                           rand