Codeforces Round #430 (Div. 2) A

 1 #include<bits/stdc++.h>
 2 using namespace std;
 3 typedef long long ll;
 4 const int N=1e5+10;
 5 
 6 double l,r,x,y,k;
 7 int main(){
 8     scanf("%lf%lf%lf%lf%lf",&l,&r,&x,&y,&k);
 9     for(int i=x;i<=y;i++){
10         double z=i*k;
11         if(z<=r&&z>=l){
12             cout<<"YES"<<endl;return 0;
13         }
14     }
15     cout<<"NO"<<endl;
16 }