View Compilation Error

0_0_39359674_27118.cpp: In function 'int main()':
0_0_39359674_27118.cpp:66:12: error: 'scanf' was not declared in this scope
   66 |      while(scanf("%d%d%d", &n, &m, &k) != EOF) {
      |            ^~~~~
0_0_39359674_27118.cpp:66:43: error: 'EOF' was not declared in this scope
   66 |      while(scanf("%d%d%d", &n, &m, &k) != EOF) {
      |                                           ^~~
0_0_39359674_27118.cpp:4:1: note: 'EOF' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
    3 | #include <queue>
  +++ |+#include <cstdio>
    4 | using namespace std;
0_0_39359674_27118.cpp:78:10: error: 'printf' was not declared in this scope
   78 |          printf("%d\n", ans);
      |          ^~~~~~
0_0_39359674_27118.cpp:78:10: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?