What is problem in code for CHANDF for subtask one

1

https://www.codechef.com/viewsolution/32992244
pls help

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2

YOU MISSED THE CORNER CASE WHEN ANY ONE OF X OR Y IS ZERO …
ANSWER WILL BE ZERO IN THAT CASE

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int test_cases;
    cin>>test_cases;//test cases
    while(test_cases--)
        {
        unsigned long long int x,y,l,r;
        cin>>x>>y>>l>>r;
        if(!(x && y))
            cout<<"0"<<endl;
        else
            cout<<(x|y)<<endl;
        }
}
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https://www.codechef.com/viewsolution/33012772
also happen’s same thing pls find the error ???

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6

You wrote if(x==0 && y==0) but it should be if(x==0 || y==0)

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7

ya thnxs i get my issue ):

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