View Compilation Error

0_0_36506868_14243.cpp: In function 'int main()':
0_0_36506868_14243.cpp:55:23: error: 'tmp' was not declared in this scope
                       tmp.insert(x);
                       ^
0_0_36506868_14243.cpp:59:29: error: 'st' was not declared in this scope
                         if(!st.count(x))
                             ^
0_0_36506868_14243.cpp:64:29: error: 'tmp' was not declared in this scope
                             tmp.erase(x);
                             ^
0_0_36506868_14243.cpp:74:29: error: 'tmp' was not declared in this scope
                 for(auto tt:tmp)
                             ^
0_0_36506868_14243.cpp:75:21: error: 'st' was not declared in this scope
                     st.insert(tt);
                     ^