function solve (ageInput, loundryPriceInput, toyPriceInput) {
    let age = Number (ageInput);
    let loundryPrice = Number (loundryPriceInput);
    let toyPrice = Number (toyPriceInput);

    let moneySaved = 0;
    let moneyGift = 0;
    let toyCnt = 0;

     for (i = 0; i <= age; i ++) {
         if (i % 2 != 0) {
             toyCnt ++;
         } else if ((i % 2 == 0) && (i != 0)) {
             moneyGift += 10;
             moneySaved = moneySaved + moneyGift - 1;
         }
     }

     let totalToyPrice = toyCnt * toyPrice;
     let totalMoneyGathered = moneySaved + totalToyPrice;
     let difference = Math.abs (totalMoneyGathered - loundryPrice);

     if (totalMoneyGathered >= loundryPrice) {
         console.log (`Yes! ${difference.toFixed(2)}`);
     } else {
         console.log (`No! ${difference.toFixed(2)}`)
     }
}