https://www.acmicpc.net/problem/11022
import java.util.*
import java.lang.String.format
fun main(args: Array<String>) {
val s=Scanner(System.`in`)
var t=s.nextInt()
for(i in 1..t){
var a=s.nextInt()
var b=s.nextInt()
println(format("Case #%d: %d + %d = %d",i,a,b,a+b))
}
}