/in/foo.cc: In function 'int main()':
/in/foo.cc:10:21: error: expected initializer before 'a'
   10 |         unsigned ll a,b;cin>>a>>b;cout<<a*b;
      |                     ^
/in/foo.cc:10:30: error: 'a' was not declared in this scope
   10 |         unsigned ll a,b;cin>>a>>b;cout<<a*b;
      |                              ^
/in/foo.cc:10:33: error: 'b' was not declared in this scope
   10 |         unsigned ll a,b;cin>>a>>b;cout<<a*b;
      |                                 ^