#include <stdio.h>
void main()
{
	unsigned long x,y,m,n,l,i,t;
	scanf("%u%u%u%u%u",&x,&y,&m,&n,&l);
	for(i=1;i<=l;i++)
	{
		x%=l;
		y%=l;
		if(x==y)
		{
			printf("%d",0);
			return;
		}
		t=m*i%l-n*i%l;
		if(t<0)
			t+=l;
		if(t==((y>x)?y-x:x-y))
		{
			printf("%d",i);
			return;
		}
	}
	printf("Impossible");
}

> 			return;
> 		}
> 	}
> 	printf("Impossible");
> }

• Re:改了一下,添加了0次的判断 (408) lllsuper 2009-07-15 08:55:13
• Re:改了一下,添加了0次的判断 (14) Christole 2009-08-11 09:58:05