View Compilation Error

0_0_26088405_19787.cpp: In function 'void zg(int)':
0_0_26088405_19787.cpp:102:31: error: 'setc' was not declared in this scope
     setc(st,node[x].son[d^1],d);
                               ^
0_0_26088405_19787.cpp: In function 'void splay(int, int)':
0_0_26088405_19787.cpp:114:38: error: 'fx' was not declared in this scope
             if(ori(x)==ori(f(x))) zg(fx));
                                      ^