HackerLand University has the following grading policy:

- Every student receives a grade in the inclusive range from to 0 to 100.
- Any less than 40 is a failing grade.
- Sam is a professor at the university and likes to round each student’s grade according to these rules:

- If the difference between the grade and the next multiple of 5 is less than 3, round up to the next multiple of 5.
- If the value of is less than 38, no rounding occurs as the result will still be a failing grade.

```
int* gradingStudents(int grades_count, int* grades, int* result_count) {
int * arr = (int*)malloc(sizeof(int)*grades_count);
for(int i=0; i<grades_count; i++){
if(grades[i]<38) {
arr[i] = grades[i];
}
else{
if((grades[i]+2)%5==0 ||(grades[i]+1)%5==0 ){
if((grades[i]+2)%5==0) arr[i] = grades[i] + 2;
if((grades[i]+1)%5==0) arr[i] = grades[i] + 1;
}
else arr[i] = grades[i];
}
}
*result_count = grades_count;
return arr;
}
```