#include <stdio.h>
int ze(int);
int nijyou(int);
int main(void) {
int a, b;
a=1;
b=2;
printf("|%d^2-%d^2|=%d\n",a
,b
,ze
(nijyou
(a
)-nijyou
(b
))); return 0;
}
int ze(int x){
return (x>0)?x:-x;
}
int nijyou(int x){
return x*x;
}
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