/in/foo.cc: In function 'int main()':
/in/foo.cc:9:16: error: expected primary-expression before '>>' token
    9 |         cin>>n;>>m
      |                ^~
/in/foo.cc:9:18: error: 'm' was not declared in this scope; did you mean 'tm'?
    9 |         cin>>n;>>m
      |                  ^
      |                  tm