I am getting wrong output for more than two input

#1

code-https://ide.codingblocks.com/s/201686

#2

u are taking input in a wrong way
first interger denotes the no of test cases
then t lines follow
each with 2 input integers

so the code would look like
cin >> t;
for(int i = 0 ;i < t; i++){
cin >> x1 >> x2;
fn() ;
}

#3

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