View Compilation Error

0_0_33598827_31244.cpp: In function 'void solve()':
0_0_33598827_31244.cpp:239:66: error: 'num' was not declared in this scope
         for (int i=1;i<=n;++i) col[i]=COL[i],v[i]=V[i],root[i]=0,num[0][i]=num[1][i]=0,rootb[i]=0;;
                                                                  ^