function coins(input) {

    let change = Number(input[0]);
    let inCoins = Math.floor(change * 100);
    let coinsCounter = 0;

    while (inCoins > 0) {
        if (inCoins >= 200) {
            coinsCounter++;
            inCoins -= 200;

        } else if (inCoins >= 100) {
            coinsCounter++;
            inCoins -= 100;

        } else if (inCoins >= 50) {
            coinsCounter++;
            inCoins -= 50;

        } else if (inCoins >= 20) {
            coinsCounter++;
            inCoins -= 20;

        } else if (inCoins >= 10) {
            coinsCounter++;
            inCoins -= 10;

        } else if (inCoins >= 5) {
            coinsCounter++;
            inCoins -= 5;

        } else if (inCoins >= 2) {
            coinsCounter++;
            inCoins -= 2;

        } else if (inCoins >= 1) {
            coinsCounter++;
            inCoins -= 1;

        }
    }
    console.log(coinsCounter);
}

coins(["1.23"])