function solve(arr) {
    var examPoints,
        coursePoints,
        bonusPoints,
        name,
        course,
        grade;
    var avgCourse = [arr[arr.length -1].trim(), 0, 0];
    for (var i = 0; i < arr.length - 1; i++) {
        var obj = arr[i].trim().split(' ').filter(function (x) {
            return x;
        });
        name = obj[0];
        course = obj[1];
        examPoints = Number(obj[2]);
        bonusPoints = Number(obj[3]);
        if (course === avgCourse[0]) {
            avgCourse[1] += examPoints;
            avgCourse[2]++;
        }
        if (examPoints < 100) {
            console.log('%s failed at "%s"', name, course);
            continue;
        }
        coursePoints = examPoints * 0.2 + bonusPoints;
        coursePoints = Math.round(coursePoints * 100)/100;
        grade = Math.min(((coursePoints / 80) * 4)+2, 6);
        grade = grade.toFixed(2);
        console.log('%s: Exam - "%s"; Points - %s; Grade - %s', name, course, coursePoints, grade);


    }
    console.log('"%s" average points -> %s', avgCourse[0], Math.round(avgCourse[1]/avgCourse[2] * 100)/100);

}

var arr = [ 'Pesho C#-Advanced 100 3',
    'Gosho Java-Basics 157 3',
    'Tosho HTML&CSS 317 12',
    'Minka C#-Advanced 57 15',
    'Stanka C#-Advanced 157 15',
    'Kircho C#-Advanced 300 0',
    'Niki C#-Advanced 400 10',
    'C#-Advanced' ];
solve(arr);