59.兰州烧饼

#include<stdio.h>
int main()
{
int guo,sb;
while(scanf("%d %d",&sb,&guo)!=EOF)
{
int mark = 1;
if(guo >= sb)
{
printf("2\n");
continue;
}
if(guo < sb && !(2*sb%guo))
{
mark = 0;
}
else
{
mark = 1;
}
printf("%d\n",2*sb/guo+mark);
}
return 0;
}