function solve(input){

    let town = input[0];
    let sales = Number(input[1]);

    let commission = 0;

    switch(town) {
        case "Sofia":
            if (sales >= 0 && sales <= 500) {
                commission = sales * 0.05;
                console.log(commission.toFixed(2))
                break;
            } else if (sales > 500 && sales <= 1000) {
                commission = sales * 0.07;
                console.log(commission.toFixed(2))
                break;
            } else if (sales > 1000 && sales <= 10000) {
                commission = sales * 0.08;
                console.log(commission.toFixed(2))
                break;
            } else if (sales > 10000) {
                commission = sales * 0.12;
                console.log(commission.toFixed(2))
                break;
            } else if (sales < 0) {
                console.log(`error`)
                break;
            }
        case "Varna":
            if (sales >= 0 && sales <= 500) {
                commission = sales * 0.045;
                console.log(commission.toFixed(2))
                break;
            } else if (sales > 500 && sales <= 1000) {
                commission = sales * 0.075;
                console.log(commission.toFixed(2))
                break;
            } else if (sales > 1000 && sales <= 10000) {
                commission = sales * 0.10;
                console.log(commission.toFixed(2))
                break;
            } else if (sales > 10000) {
                commission = sales * 0.13;
                console.log(commission.toFixed(2))
                break;
            } else if (sales < 0) {
                console.log(`error`)
                break;
            }
        case "Plovdiv":
            if (sales >= 0 && sales <= 500) {
                commission = sales * 0.055;
                console.log(commission.toFixed(2))
                break;
            } else if (sales > 500 && sales <= 1000) {
                commission = sales * 0.08;
                console.log(commission.toFixed(2))
                break;
            } else if (sales > 1000 && sales <= 10000) {
                commission = sales * 0.12;
                console.log(commission.toFixed(2))
                break;
            } else if (sales > 10000) {
                commission = sales * 0.145;
                console.log(commission.toFixed(2))
                break;
            } else if (sales < 0) {
                console.log(`error`)
                break;
            }
        default:
            console.log(`error`)
            break;
    }
}