test.cpp

#include <math.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
#include <stdbool.h>
using namespace std;

int gradingStudents(int n,int a[]){
    int temp;
    for(int i=0;i < n;i++){
        if(a[i]>38 && a[i] % 5 != 0){
            temp = a[i];
            do{
                temp++;
            }
            while(temp % 5== 0);
            if(temp - a[i] < 3){
                a[i] = temp;
            }

        }
        else{
            temp = a[i];
        }
    }
   return temp;
}

int main(){
    int n;
    scanf("%d",& n);
    int a[n];
    for(int i=0;i<n;i++){
        scanf("%d",& a[i]);
    }
    printf("%n",gradingStudents(n,a)); //Only name of an array is passed as an argument


}