40/100

function forloop(input) {
    let moves = +input[0];

    let result = 0;

    let res09 = 0;
    let res1019 = 0;
    let res2029 = 0;
    let res3039 = 0;
    let res4050 = 0;
    let resInvalid = 0;

    for (let i = 1; i < input.length; i++) {
        let count = +input[i];


        if (count >= 0 && count <= 9) {
            result += count * 0.8;
            res09++;
        }
        else if (count >= 10 && count <= 19) {
            result += count * 0.3;
            res1019++;
        } else if (count >= 20 && count <= 29) {
            result += count * 0.4;
            res2029++;
        }
        else if (count >= 30 && count <= 39) {
            result += 50;
            res3039++;
        }
        else if (count >= 40 && count <= 50) {
            result += 100;
            res4050++;
        }

        if (count < 0 || count > 50) {
            result /= 2;
            resInvalid++;

        }
    }



    let result09 = (res09 / moves) * 100;
    let result1019 = (res1019 / moves) * 100;
    let result2029 = (res2029 / moves) * 100;
    let result3039 = (res3039 / moves) * 100;
    let result4050 = (res4050 / moves) * 100;
    let resultInvalid = (resInvalid / moves) * 100;





    console.log(result.toFixed(2));
    console.log(`From 0 to 9: ${result09.toFixed(2)}%`);
    console.log(`From 10 to 19: ${result1019.toFixed(2)}%`);
    console.log(`From 20 to 29: ${result2029.toFixed(2)}%`);
    console.log(`From 30 to 39: ${result3039.toFixed(2)}%`);
    console.log(`From 40 to 50: ${result4050.toFixed(2)}%`);
    console.log(`Invalid numbers: ${resultInvalid.toFixed(2)}%`);



}

forloop(["10", "43", "57", "-12", "23", "12", "0", "50", "40", "30", "20"]);