View Compilation Error

0_0_27045678_9763.cpp: In function 'int main()':
0_0_27045678_9763.cpp:13:29: error: 'scanf_s' was not declared in this scope
  while (scanf("%d%d", &n, &m) != EOF) {
                             ^
0_0_27045678_9763.cpp:14:29: error: 'memset' was not declared in this scope
   memset(vis, 0, sizeof(vis));
                             ^