Code in Haskell only Elon musk has three potato fields. Harvest x potatoes in the first field, y potatoes in the second field and you will still harvest potatoes in the third field. Musk is...

Extracted text: Code in Haskell only Elon musk has three potato fields. Harvest x potatoes in the first field, y potatoes in the second field and you will still harvest potatoes in the third field. Musk is superstitious and believes that if the amount of potatoes harvested in the three fields is the main value, he will make a huge profit. Please help him by counting the number of potatoes that if harvested in the third field will make the total amount of potatoes. At least one potato should be harvested in the third field. Input Output 3 4 6 1 2 4 4 4 9