import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
import java.io.IOException;
public class Main{
public static void main(String[] args) throws IOException{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int N = Integer.parseInt(br.readLine());
StringTokenizer st;
int A, B;
for(int i=1;i<=N;i++){
st = new StringTokenizer(br.readLine()," ");
A = Integer.parseInt(st.nextToken());
B = Integer.parseInt(st.nextToken());
System.out.printf("Case #%d: %d + %d = %d\n",i,A,B,A+B);
}
br.close();
}
}