View Compilation Error

0_0_33715196_18424.cpp: In function 'int main()':
0_0_33715196_18424.cpp:63:27: error: 'begi' was not declared in this scope
             if(i-p[i]==0) begi[pn++]=i;
                           ^
0_0_33715196_18424.cpp:64:31: error: 'tail' was not declared in this scope
             if(i+p[i]==len-1) tail[ln++]=i;
                               ^
0_0_33715196_18424.cpp:70:24: error: 'begi' was not declared in this scope
                 int s1=begi[i]+p[begi[i]]+1 ,s2=tail[j]-p[tail[j]]-1;
                        ^
0_0_33715196_18424.cpp:71:23: error: 's2' was not declared in this scope
                 if(s1>s2)
                       ^
0_0_33715196_18424.cpp:73:29: error: 's2' was not declared in this scope
                 int mid=(s1+s2)/2;
                             ^