write an if-else statement that assigns safetycheck with 1 if the sum of passengerweight and cargoweight is less than or equal maxweight. otherwise, assign safetycheck with 0. ex: if passengerweight is 200, cargoweight is 100, and maxweight is 500, then safetycheck is assigned with 1. if passengerweight is 300, cargoweight is 275, and maxweight is 500, then safetycheck is assigned with 0.