View Compilation Error

0_0_37731138_28500.cpp:30:10: error: redefinition of 'int dfn [200009]'
 int dfn[N];
          ^
0_0_37731138_28500.cpp:29:12: note: 'int dfn [200009]' previously declared here
 int dep[N],dfn[N],siz[N],f[N],top[N],zson[N];
            ^
0_0_37731138_28500.cpp: In function 'void dfs2(int, int)':
0_0_37731138_28500.cpp:53:5: error: 'rdfn' was not declared in this scope
     rdfn[now] = ct;
     ^