/in/foo.cc: In function 'int main()':
/in/foo.cc:47:45: error: expected ')' before 'continue'
     if(tx<1||tx>n||ty<1||ty>m||!book[tx][ty]continue;
                                             ^~~~~~~~
/in/foo.cc:61:10: error: expected '}' at end of input
  return 0;
          ^