View Compilation Error

0_0_33544941_12722.cpp: In member function 'void zxs::clear()':
0_0_33544941_12722.cpp:34:64: error: 'struct zxs::a_w' has no member named 'rk'
         for(int i=1;i<=tot;++i)tr[i].sum=lson(i)=rson(i)=tr[i].rk=0;
                                                                ^