※주의
import java.io.*;
import java.util.StringTokenizer;
public class B11022 {
public static void main(String args[]) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
int N = Integer.parseInt(br.readLine());
for(int i=1; i<=N; i++){
String input = br.readLine();
StringTokenizer st = new StringTokenizer(input, " ");
int A = Integer.parseInt(st.nextToken());
int B = Integer.parseInt(st.nextToken());
bw.write("Case #"+i+": " + A + " + " + B + " = " + (A+B) + "\n");
}
bw.flush();
}
}