init:
    contract.storage[1000] = "hot"
    contract.storage[1001] = "cold"

code:
    // Make sure we have enough gas to run the contact
    if tx.value < tx.basefee * 100:
        // If not, stop
        stop

    // Swap
    temp = contract.storage[1000]
    contract.storage[1000] = contract.storage[1001]
    contract.storage[1001] = temp