View Compilation Error

0_0_37666073_22449.cpp: In function 'void solve()':
0_0_37666073_22449.cpp:48:27: error: 'memset' was not declared in this scope
  memset(ans, 0, sizeof ans);
                           ^
0_0_37666073_22449.cpp: In function 'int main()':
0_0_37666073_22449.cpp:89:2: error: expected '}' at end of input
  }
  ^