Trekking Mania

function trekkingMania(input) {
    let index = 0;
    let groups = Number(input[index]);
    index++;
    let groupMussala = 0;
    let groupMonblan = 0;
    let groupKilimandjaro = 0;
    let groupK2 = 0;
    let groupEverest = 0;

    for (let i = 0; i < groups; i++) {
        let currentGroup = Number(input[index]);
        index++;
        if (currentGroup <= 5) {
            groupMussala += currentGroup;
        } else if (currentGroup >= 6 && currentGroup <= 12){
            groupMonblan += currentGroup;
        } else if (currentGroup >= 13 && currentGroup <= 25){
            groupKilimandjaro += currentGroup;
        } else if (currentGroup >= 26 && currentGroup <= 40){
            groupK2 += currentGroup;
        } else if (currentGroup >= 41){
            groupEverest += currentGroup;
        }
    }
    let allPeople = groupMussala + groupMonblan + groupKilimandjaro + groupK2 + groupEverest;
    let mussalaPercent = (groupMussala / allPeople) * 100;
    let monblanPercent = (groupMonblan / allPeople) * 100;
    let kilimandjaroPercent = (groupKilimandjaro / allPeople) * 100;
    let ktwoPercent = (groupK2 / allPeople) * 100;
    let everestPercent = (groupEverest / allPeople) * 100;
    console.log(`${mussalaPercent.toFixed(2)}%`);
    console.log(`${monblanPercent.toFixed(2)}%`);
    console.log(`${kilimandjaroPercent.toFixed(2)}%`);
    console.log(`${ktwoPercent.toFixed(2)}%`);
    console.log(`${everestPercent.toFixed(2)}%`);
}