function whatFlavors(cost, money) {
  // Write your code here
  for (let i = 0; i < cost.length; i++) {
    const flavor1 = cost[i];
    if (flavor1 < money) {
        // only check indexes after the current one (i)
        const idxFlavor2 = cost.indexOf(money - flavor1, i + 1);
        
        // check if "corresponding" price exists, if true: print and exit
        if (idxFlavor2 > i) {
            console.log(i + 1 + ' ' + (idxFlavor2 + 1));
            // we done, loop can be aborted
            return;
        }
    }
  }
}