代码

#include <cmath>
int plus(int a, int b)
{
	if(a>=0&&b>=0) return int(powl(sqrtl((long double)a) + sqrtl((long double)b), 2) - (long double)2.0 * sqrtl((long double)a) * sqrtl((long double)b));
	else if(a<0&&b<0) return -int(powl(sqrtl((long double)(-a)) + sqrtl((long double)(-b)), 2) - (long double)2.0 * sqrtl((long double)(-a)) * sqrtl((long double)(-b)));
	else return a+b;
}

评测结果