View Compilation Error

0_0_22828336_11228.cpp: In function 'bool cmp(int*, int, int, int)':
0_0_22828336_11228.cpp:38:26: error: 'par' was not declared in this scope
     return r[a]==r[b]&&r[par[a][l]]==r[par[b][l]];
                          ^
0_0_22828336_11228.cpp: In function 'void da(int, int)':
0_0_22828336_11228.cpp:54:34: error: 'par' was not declared in this scope
         for(int i=0;i<n;i++) add(par[i][qq],i);
                                  ^