Trekking Mania

function trekkingMania(input) {

        let index = 0;
        let groups = Number(input[index]);
        index++;

        let Musala = 0;
        let Montblanc = 0;
        let Kilimanjaro = 0;
        let K2 = 0;
        let Everest = 0;

        let sumAlpinist = 0;

        for (let i = 1; i <= groups; i++) {
            let alpinist = Number(input[index]);
            index++;
            sumAlpinist += alpinist;

            if (alpinist <= 5) {
                Musala += alpinist;
            } else if (alpinist >= 6 && alpinist <= 12) {
                Montblanc += alpinist;
            } else if (alpinist >= 13 && alpinist <= 25) {
                Kilimanjaro += alpinist;
            } else if (alpinist >= 26 && alpinist <= 40) {
                K2 += alpinist;
            } else if (alpinist >= 41) {
                Everest += alpinist;
            }
        }

        let percentMusala = Musala / sumAlpinist * 100;
        let percentMontblanc = Montblanc / sumAlpinist * 100;
        let percentKilimanjaro = Kilimanjaro / sumAlpinist * 100;
        let percentK2 = K2 / sumAlpinist * 100;
        let percentEverest = Everest / sumAlpinist * 100;

        console.log(`${(percentMusala).toFixed(2)}%`);
        console.log(`${(percentMontblanc).toFixed(2)}%`);
        console.log(`${(percentKilimanjaro).toFixed(2)}%`);
        console.log(`${(percentK2).toFixed(2)}%`);
        console.log(`${(percentEverest).toFixed(2)}%`);
    }

trekkingMania(["10", "10", "5", "1", "100", "12", "26", "17", "37", "40", "78"])