View Compilation Error

0_0_26202485_10973.cpp: In function 'int main()':
0_0_26202485_10973.cpp:52:13: error: 'ans' was not declared in this scope
         mem(ans,0);
             ^
0_0_26202485_10973.cpp:7:32: note: in definition of macro 'mem'
 #define mem(arry,value) memset(arry,value,sizeof(arry))
                                ^