pbpb

function solve(input){
    let day = Number(input.shift());
    let kindAp = input.shift();
    let grade = input.shift();
    let price = 0;
    switch (kindAp) {
        case 'room for one person' :
            if (day < 10) {
                price = (day -1) * 18.0;
            }else if (day >= 10 && day <= 15){
                price = (day -1) * 18.0
            }else if (day >15){
               price = (day -1) * 18.0
            }
            } ;brake;
        case 'apartment' : {
            if (day < 10) {
                price = ((day - 1) * 25.0) * 0.7
            }else if (day >= 10 && day <= 15) {
               price = ((day - 1) * 25.0) * 0.65
            }else if (day > 15) {
                price = ((day - 1) * 25.0) * 0.50
            }
        } ;brake;
        case 'president apartment' : {
            if (day < 10) {
                price = ((day - 1) * 35.0) * 0.9
            }else if (day >= 10 && day <= 15) {
               price = ((day - 1) * 35.0) * 0.85
            }else if (day > 15) {
                price = ((day - 1) * 35.0) * 0.80
            }
        } ;brake;
        if (grade === 'positive') {
            price * 1.25
        }else if (grade === 'negative') {
            price * 0.90
            }

    }