View Compilation Error

0_0_22437057_24272.cpp:14:18: error: 'maxn' was not declared in this scope
 char str0[10001][maxn];
                  ^
0_0_22437057_24272.cpp: In function 'int main()':
0_0_22437057_24272.cpp:71:18: error: 'str0' was not declared in this scope
             cin>>str0[i];
                  ^
0_0_22437057_24272.cpp:76:24: error: 'str0' was not declared in this scope
           if(find(root,str0[i]))
                        ^