View Compilation Error

0_0_37854158_941.cpp: In function 'int main()':
0_0_37854158_941.cpp:41:13: error: 'ans' was not declared in this scope
             ans[i]= search(s)^s; //注意这个好用的小技巧啊啊啊啊
             ^
0_0_37854158_941.cpp:45:44: error: 'ans' was not declared in this scope
         for(int i=1;i<=m;i++)printf("%d\n",ans[i]);
                                            ^