View Compilation Error

0_0_30567122_21205.cpp: In function 'void Init()':
0_0_30567122_21205.cpp:16:12: error: 'vis' was not declared in this scope
     memset(vis,0,sizeof(vis));
            ^
0_0_30567122_21205.cpp:21:20: error: 'n' was not declared in this scope
     for(int i=1;i<=n;i++) link[i].clear();
                    ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cstdbool:39:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:56,
                 from 0_0_30567122_21205.cpp:1:
0_0_30567122_21205.cpp: In function 'int main()':
0_0_30567122_21205.cpp:105:19: error: expected primary-expression before 'bool'
         for(int i=bool vis[N];
                   ^
0_0_30567122_21205.cpp:106:9: error: expected primary-expression before 'int'
         int root,mxsz;
         ^
0_0_30567122_21205.cpp:106:9: error: expected ';' before 'int'
0_0_30567122_21205.cpp:106:9: error: expected primary-expression before 'int'
0_0_30567122_21205.cpp:106:9: error: expected ')' before 'int'