View Compilation Error

0_0_39307440_12466.cpp: In function 'int main()':
0_0_39307440_12466.cpp:27:11: error: 'scanf' was not declared in this scope
   27 |     while(scanf("%d%d", &n, &m) == 2){
      |           ^~~~~
0_0_39307440_12466.cpp:34:9: error: 'memset' was not declared in this scope
   34 |         memset(ans, 0, sizeof(ans));
      |         ^~~~~~
0_0_39307440_12466.cpp:1:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
  +++ |+#include <cstring>
    1 | const int M = 1e6+50;
0_0_39307440_12466.cpp:37:13: error: 'printf' was not declared in this scope
   37 |             printf("%d\n", ans[i]);
      |             ^~~~~~
0_0_39307440_12466.cpp:1:1: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
  +++ |+#include <cstdio>
    1 | const int M = 1e6+50;