//这个题最大坑点
//-2^31的在int范围内
//而2^31不在int范围内
#includeint main()
{int a, b;scanf("%d%d", &a, &b);//特判-2^31if (a == 1 << 31 && b > 0)printf("%u", a);//同号else if (a > 0 && b > 0 || a < 0 && b < 0)printf("%d", a);//异号else if (a > 0 && b < 0 || a < 0 && b > 0)printf("%d", -1 * a);elseprintf("0");return 0;
}