View Compilation Error

0_0_37841002_19711.cpp:10:8: error: 'Edge' was not declared in this scope
 vector<Edge> edge[50005];
        ^
0_0_37841002_19711.cpp:10:12: error: template argument 1 is invalid
 vector<Edge> edge[50005];
            ^
0_0_37841002_19711.cpp:10:12: error: template argument 2 is invalid
0_0_37841002_19711.cpp:10:25: error: invalid type in declaration before ';' token
 vector<Edge> edge[50005];
                         ^
0_0_37841002_19711.cpp: In function 'void solve()':
0_0_37841002_19711.cpp:67:32: error: request for member 'clear' in 'edge[i]', which is of non-class type 'int'
  for(int i=1;i<=n;++i) edge[i].clear(),first[i]=0,scanf("%d",&a[i]),pos[a[i]]=i;
                                ^