function solve(input){
    let index = 0;
    let pcCount = Number(input[index]);
    index++;
    let lastDigit = 0;
    let twoDigits = 0;
    let percent = 0;
    let sales = 0;
    let salesSum = 0;
    let sumLastDigit = 0;


    for(let i = 1; i<=pcCount;i++){
        let currentNumber = Number(input[index]);
        index++;

        lastDigit = currentNumber % 10;

        twoDigits = (currentNumber - lastDigit) / 10;

        if(lastDigit == 2){
            sumLastDigit += lastDigit
        }else if(lastDigit === 3){
            percent = 0.50;
            sales = twoDigits * percent;
            salesSum+=sales;
            sumLastDigit+=lastDigit;
        } else if(lastDigit === 4){
            percent = 0.70;
            sales = twoDigits* percent;
            salesSum+=sales;
            sumLastDigit+=lastDigit;
        } else if(lastDigit === 5){
            percent = 0.85;
            sales  = twoDigits * percent;
            salesSum+=sales;
            sumLastDigit+=lastDigit;
        } else if(lastDigit === 6){
            percent = 1;
            sales = twoDigits * percent
            salesSum+=sales;
            sumLastDigit+=lastDigit;
        }




    }
    let finalSum = sumLastDigit / pcCount;

    console.log(`${salesSum.toFixed(2)}`);
    console.log(`${finalSum.toFixed(2)}`);





}