pku1380.cpp

这是ACM 方面的资料 是PKU的 北京大学的出来的

#include <stdio.h>
#include <math.h>
long A, B, X, Y;

void Swap(long *a, long *b)
{
	long t;
	t = *a;
	*a = *b;
	*b = t;
}

long Solve()
{
	double Out, In, la, lb, l;
	scanf("%ld %ld %ld %ld", &A, &B, &X, &Y);
	if (A < B)
	{
		Swap(&A, &B);
	}
	if (X < Y)
	{
		Swap(&X, &Y);
	}
	if (A > X && B > Y)
	{
		return 1;
	}
	if (B <= Y)
	{
		return 0;
	}
	In = sqrt(1.0 * X * X + 1.0 * Y * Y);
	Out = sqrt(1.0 * A * A + 1.0 * B * B);

	if (In > Out)
	{
		return 0;
	}

	la = A - sqrt(In * In - 1.0 * B * B);
	lb = B - sqrt(In * In - 1.0 * A * A);
	la = la / 2;
	lb = lb / 2;
	l = sqrt(la * la + lb * lb);
	if (l > Y)
	{
		return 1;
	}
	return 0;
}

int main()
{
	int T;
	scanf("%d", &T);
	while (T--)
	{
		if(Solve())
		{
			printf("Escape is possible.\n");
		}
		else
		{
			printf("Box cannot be dropped.\n");
		}
	}
	return 0;
}