View Compilation Error

0_0_30645992_27095.cpp: In function 'int main()':
0_0_30645992_27095.cpp:82:40: error: 'pp' was not declared in this scope
                 for(int j = 0; j < v[a[pp]].size(); j ++) {
                                        ^
0_0_30645992_27095.cpp:89:17: error: 'pp' was not declared in this scope
                 pp ++;
                 ^