View Compilation Error

0_0_27480517_15213.cpp: In function 'void dfs(int, int)':
0_0_27480517_15213.cpp:20:24: error: expected ';' before '!' token
     for(int i=head[u];i!+-1;i=E[i].next){
                        ^
0_0_27480517_15213.cpp:20:28: error: expected ')' before ';' token
     for(int i=head[u];i!+-1;i=E[i].next){
                            ^
0_0_27480517_15213.cpp:20:29: error: 'i' was not declared in this scope
     for(int i=head[u];i!+-1;i=E[i].next){
                             ^