import java.io.*;
import java.util.Scanner;
import java.util.StringTokenizer;
public class Main {
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());
int A;
int B;
StringTokenizer st;
for (int i = 1; i <= n; i++) {
st = new StringTokenizer(br.readLine()," ");
A = Integer.parseInt(st.nextToken());
B = Integer.parseInt(st.nextToken());
bw.write("Case #"+i+": " +
A + " + " + B + " = " +
(A+B) + "\n"
);
}
br.close();
bw.flush();
bw.close();
}
}