05. Game Of Intervals

function gameOfIntervals(input) {
    let num = Number(input[0]);
    let result = 0.00;
    let num0To10 = 0;
    let num10To20 = 0;
    let num20To30 = 0;
    let num30To40 = 0;
    let num40To50 = 0;
    let numInvalid = 0;

    for (let i = 1; i <= num; i++) {
        let number = Number(input[i]);
        if (number >= 0 && number < 10) {
            result += number * 0.2;
            num0To10++;
        } else if (number >= 10 && number < 20) {
            result += number * 0.3;
            num10To20++;
        } else if (number >= 20 && number < 30) {
            result += number * 0.4;
            num20To30++;
        } else if (number >= 30 && number < 40) {
            result += 50;
            num30To40++;
        } else if (number >= 40 && number <= 50) {
            result += 100;
            num40To50++;
        } else{
            result /= 2;
            numInvalid++;
        }
    }

    console.log(`${result.toFixed(2)}`);
    console.log(`From 0 to 9: ${(num0To10 / num * 100).toFixed(2)}%`);
    console.log(`From 10 to 19: ${(num10To20 / num * 100).toFixed(2)}%`);
    console.log(`From 20 to 29: ${(num20To30 / num * 100).toFixed(2)}%`);
    console.log(`From 30 to 39: ${(num30To40 / num * 100).toFixed(2)}%`);
    console.log(`From 40 to 50: ${(num40To50 / num * 100).toFixed(2)}%`);
    console.log(`Invalid numbers: ${(numInvalid / num * 100).toFixed(2)}%`);
}