View Compilation Error

0_0_15720262_2619.cpp: In member function 'void Splay::init()':
0_0_15720262_2619.cpp:30:16: error: 'oo' was not declared in this scope
         nul->v=oo;nul->s=0;
                ^
0_0_15720262_2619.cpp: In member function 'void Splay::selectK(int, Node*)':
0_0_15720262_2619.cpp:112:21: error: 'K' was not declared in this scope
             if(tmp==K)break;
                     ^
0_0_15720262_2619.cpp:113:20: error: 'K' was not declared in this scope
             if(tmp>K)p=L(p);
                    ^