Help me in solving LBJ201A problem

help
,
1

My issue

My code

// Step 1: Read and understand the problem statement and sample test cases

// Click on 'Next' once you are ready to proceed.
class avg
{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        int t=sc.nextInt();
        for(int i=0;i<t;i++)
        {
            int A=sc.nextInt();
            int C=sc.nextInt();
            int B=A+C/2;
            if(B==int)
            System.out.println(B);
            else
            return -1;
        }
    }
}

Learning course: Java for problem solving - 1
Problem Link: CodeChef: Practical coding for everyone