#include <stdio.h>

void swap(int *a, int *b)
{
    int temp;
    temp = *a;
    *a = *b;
    *b = temp;
}

int main()
{
    int x, y;
    int *p = &x, *q = &y;
    scanf("%d%d", &x, &y);
    swap(p, q);
    printf("x = %d, y = %d\n", x, y);
    return 0;
}