View Compilation Error

0_0_32183680_24017.cpp: In function 'int main()':
0_0_32183680_24017.cpp:9:31: error: 'scanf_s' was not declared in this scope
  while (scanf_s("%d%d", &n, &m) != EOF)
                               ^
0_0_32183680_24017.cpp:11:25: error: 'memset' was not declared in this scope
   memset(s, 0, sizeof(s));
                         ^