#include <stdio.h>
int main(void)
{
	long int x,y,m,n,l,cha,count,dis,i;
	scanf("%ld%ld%ld%ld%ld",&x,&y,&m,&n,&l);
	cha=m-n;
	dis=y-x;
	if(cha==0)
	   printf("Impossible\n");
	else{
		if(dis>0&&cha<0){
			dis=l-dis;
			cha=-cha;
		}
		else if(dis<0&&cha>0)
			dis=l+dis;
		else if(dis<0&&cha<0){
			dis=-dis;
			cha=-cha;
		}
	for(i=0;;i++){
		count=(dis+i*l)/cha;
		if(count*cha==dis+i*l)
			break;
	}
	printf("%d\n",count);
	}
	return 0;
}

• Re:why wrong (22) jndx20111221395 2012-06-11 16:33:31