分享一下java版本
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc =new Scanner(System.in);
while(sc.hasNext()){
for(int i=0;i<2;i++){
int a = sc.nextInt();
int b = sc.nextInt();
System.out.println(a+b);
}
}
}
} 
