11448 - Who said crisis?

package uvaTry;

import java.math.BigInteger;
import java.util.Scanner;

public class Main11448 {

public static void main(String[] args) {
// TODO Auto-generated method stub
BigInteger a,b,res;
Scanner sc=new Scanner(System.in);
int i,n;
n=sc.nextInt();
for(i=0;i<n;i++)
{
a=sc.nextBigInteger();
b=sc.nextBigInteger();
res=a.subtract(b);
System.out.println(res);

}
}

}

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Amit Ghosh

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