#include <stdio.h>
void swap(int *a, int *b)
{
int tmp;
tmp = *a;
*a = *b;
*b = tmp;
}
void sort(int *x, int *y)
{
if (*x < *y) {
swap(x, y);
}
}
int main(void)
{
int x, y;
sort(&x, &y);
return 0;
}
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