View Compilation Error

0_0_35996451_10059.cpp:21:4: error: 'MAX' was not declared in this scope
 }e[MAX] ;
    ^
0_0_35996451_10059.cpp: In function 'void add(int, int)':
0_0_35996451_10059.cpp:23:2: error: 'e' was not declared in this scope
  e[++cnt].v = v ;
  ^
0_0_35996451_10059.cpp: In function 'void tarjan(int)':
0_0_35996451_10059.cpp:32:34: error: 'e' was not declared in this scope
  for(int i = head[u] ;i!=-1 ; i= e[i].next ){
                                  ^