Run id: 160503

Main.cc: In function 'int main()':
Main.cc:9:10: error: 'a' was not declared in this scope
     cin>>a>>b;
          ^
Main.cc:9:13: error: 'b' was not declared in this scope
     cin>>a>>b;
             ^
Main.cc:8:9: warning: unused variable 'x' [-Wunused-variable]
     int x,y;
         ^
Main.cc:8:11: warning: unused variable 'y' [-Wunused-variable]
     int x,y;
           ^