View Compilation Error

0_0_21413438_23241.cpp:26:10: error: expected ')' before ']' token
 }e[maxn(2];
          ^
0_0_21413438_23241.cpp: In function 'void add(int, int)':
0_0_21413438_23241.cpp:47:5: error: 'e' was not declared in this scope
     e[cnt].v=v, e[cnt].next=head[u];
     ^
0_0_21413438_23241.cpp: In function 'void Tarjan(int)':
0_0_21413438_23241.cpp:55:31: error: 'e' was not declared in this scope
     for (int i=head[s]; ~i; i=e[i].next) {
                               ^
0_0_21413438_23241.cpp: In function 'void dfs(int)':
0_0_21413438_23241.cpp:80:31: error: 'e' was not declared in this scope
     for (int i=head[u]; ~i; i=e[i].next) {
                               ^