Codeforces Round #430 (Div. 2) A. Kirill And The Game

#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
using namespace std;
int read()
{
char ch=getchar();int f=0;
while(ch<'0'||ch>'9') ch=getchar();
while(ch>='0'&&ch<='9') {f=f*10+(ch^48);ch=getchar();}
return f;
}
int main()
{
long long l,r,x,y,k;
cin>>l>>r>>x>>y>>k;
for(int i=x;i<=y;i++)
{
if(i*k>=l&&i*k<=r)
{
printf("YES");
return 0;
}
}
puts("NO");
return 0;
}