View Compilation Error

0_0_36460727_10844.cpp: In function 'int main()':
0_0_36460727_10844.cpp:44:27: error: cannot convert 'std::vector<int>' to 'void*' for argument '1' to 'void* memset(void*, int, size_t)'
   memset(ans,0,sizeof(ans));
                           ^