View Compilation Error

0_0_14815512_17650.cpp: In function 'int main()':
0_0_14815512_17650.cpp:79:49: error: 'num' was not declared in this scope
                 ans+=(rank_num[u]+rank_num[v])*(num[u]+num[v]-1)-num[u]*(num[u]-1) - num[v]*(num[v]-1);
                                                 ^
0_0_14815512_17650.cpp:82:25: error: 'cnt' was not declared in this scope
             pp[a[i].id]=cnt;
                         ^