function gradingStudents(grades) {
    let result=[],i;
    for(i=0; i<grades.length; i++){
        if(grades[i]<38){
            result.push(grades[i]);
        }
        else{
            let mutipal5 = parseInt((grades[i]/5+1))*5;
            let lessthen3 = mutipal5 -grades[i];
            if(lessthen3<3){
              result.push(mutipal5) ; 
            }
            else{
                result.push(grades[i]);
            }
            
            }
    }
    return result
}