#include<stdio.h>
int main(){
__int64 h,a,b,k,j=0;
while(scanf("%I64d%I64d%I64d%I64d",&h,&a,&b,&k),h||a||b||k) {
printf("Case #%I64d: ",++j);
if(h<a+1) {
printf("YES\n");
continue;
}
if(a<=b) {
printf("NO\n");
continue;
}
if((a-b)*k-b>0) {
printf("YES\n");
continue;
}
if(h-(a-b)*(k-1)-a<1) {
printf("YES\n");
continue;
}
printf("NO\n");
}
return 0;
}
hdu 4950
最新推荐文章于 2019-12-18 20:07:00 发布