#include <stdio.h>
void sort(int *x, int *y);
void swap(int *x,int *y);
int main(void) {
int x=1, y=3;
sort(&x, &y);
return 0;
}
void sort(int *x, int *y){
if(*x<*y){
swap(x, y);
}
}
void swap(int *x, int *y){
int w;
w=*x;
*x=*y;
*y=w;
}
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