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

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