/in/foo.cc: In function 'int main()':
/in/foo.cc:15:16: error: 'K' was not declared in this scope
        cin>>t>>K;
                ^
/in/foo.cc:23:12: error: 'X' was not declared in this scope
       cin>>X;
            ^
/in/foo.cc:32:1: error: expected '}' at end of input
 }
 ^