import java.math.BigDecimal; import java.math.BigInteger; import java.util.*; class solution { private BigInteger m,n; private int T=0; private int Index=1; private Scanner iner=new Scanner(System.in); public void add() { T=iner.nextInt(); while(T!=0) { m=iner.nextBigInteger(); n=iner.nextBigInteger(); System.out.println("Case "+Index+":"); System.out.println(m+" + "+n+" = "+m.add(n)); System.out.println(); T--; Index++; } } } public class Main { public static void main(String[] args) { solution space = new solution(); space.add(); } }