Help me in solving FLOW001 problem

My issue

i can’t solve this problem

My code

#include <iostream>
using namespace std;

int main() {
  int x,y,t;	// your code goes here
  cin>>x>>y;
  t=x+y;
  for(t=3;t<=300;t+t) {
      cout<<t<<endl;
  }
	return 0;
}

Learning course: Practice C++
Problem Link: CodeChef: Practical coding for everyone

Hey, to solve this problem, you have to learn how to take multiple inputs. That is taught in this learning course - Learn Logic Building in C++ - CodeChef