View Compilation Error

0_0_39256668_29710.cpp: In function 'int main()':
0_0_39256668_29710.cpp:7:21: error: 'n' was not declared in this scope
    7 |         while (cin>>n>>m)
      |                     ^
0_0_39256668_29710.cpp:7:24: error: 'm' was not declared in this scope; did you mean 'tm'?
    7 |         while (cin>>n>>m)
      |                        ^
      |                        tm
0_0_39256668_29710.cpp:15:53: error: expected ';' before 'l'
   15 |                 for (set<int>::iterator it=a.begin()l;it !=s.end();it++)
      |                                                     ^
      |                                                     ;
0_0_39256668_29710.cpp:15:53: error: 'l' was not declared in this scope
0_0_39256668_29710.cpp:15:60: error: 's' was not declared in this scope
   15 |                 for (set<int>::iterator it=a.begin()l;it !=s.end();it++)
      |                                                            ^
0_0_39256668_29710.cpp:15:67: error: expected ')' before ';' token
   15 |                 for (set<int>::iterator it=a.begin()l;it !=s.end();it++)
      |                     ~                                             ^
      |                                                                   )
0_0_39256668_29710.cpp:15:68: error: 'it' was not declared in this scope; did you mean 'int'?
   15 |                 for (set<int>::iterator it=a.begin()l;it !=s.end();it++)
      |                                                                    ^~
      |                                                                    int