#include <stdio.h>
void process(int a, int b)
{
a = a ^ b;
b = a ^ b;
a = a ^ b;
printf("%d %d\n", a, b);
}
int main()
{
int a, b;
scanf("%d%d", &a,&b);
process(a,b);
return 0;
}
void process(int a, int b)
{
a = a ^ b;
b = a ^ b;
a = a ^ b;
printf("%d %d\n", a, b);
}
int main()
{
int a, b;
scanf("%d%d", &a,&b);
process(a,b);
return 0;
}