01. SoftUni Reception

function softUniReception(input) {
    let first = Number(input[0]);
    let second = Number(input[1]);
    let third = Number(input[2]);
    let students = Number(input[3]);

    let counter = 1, hours = 0;

    while (students > 0) {
        students -= first + second + third;
        hours += counter % 3 == 0 && students > 0 ? 2 : 1;
        counter += 1;
    }

    console.log(`Time needed: ${hours}h.`);
    return;
}