/in/foo.cc: In member function 'int SplayTree::pushup(int)':
/in/foo.cc:24:2: warning: no return statement in function returning non-void [-Wreturn-type]
  }
  ^
/in/foo.cc: In member function 'int SplayTree::Rotate(int)':
/in/foo.cc:38:2: warning: no return statement in function returning non-void [-Wreturn-type]
  }
  ^
/in/foo.cc: In member function 'int SplayTree::Splay(int, int)':
/in/foo.cc:54:2: warning: no return statement in function returning non-void [-Wreturn-type]
  }
  ^
/in/foo.cc: In member function 'int SplayTree::Delroot()':
/in/foo.cc:101:2: warning: no return statement in function returning non-void [-Wreturn-type]
  }
  ^
/in/foo.cc: In member function 'int SplayTree::Split(int)':
/in/foo.cc:120:2: warning: no return statement in function returning non-void [-Wreturn-type]
  }
  ^
/in/foo.cc: In function 'int Splayinit()':
/in/foo.cc:132:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/in/foo.cc: In function 'int Work(int, int)':
/in/foo.cc:148:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/in/foo.cc: In member function 'int SplayTree::Insertback(Lint)':
/in/foo.cc:68:2: warning: control reaches end of non-void function [-Wreturn-type]
  }
  ^
/in/foo.cc: In member function 'Lint SplayTree::Kth(int)':
/in/foo.cc:84:2: warning: control reaches end of non-void function [-Wreturn-type]
  }
  ^