Yes, my idea is to transfer the deposited SOL directly to the two receiving addresses defined in the contract

How can I achieve this requirement, or do I need to write a withdrawal method?

Thank you for your help . The expectation of the contract is that the user recharges SOL to the contract, and in the recharge method, the received SOL is transferred to the two addresses defined in the contract based on comparison. Do these two receiving addresses also need to be set as parameters when calling the contract?