Day 33 " Number line jumps"

#include <bits/stdc++.h>
 
using namespace std;

int main(){
int sp1,j1,sp2,j2; 
cin>>sp1; //starting point kangaroo1
cin>>j1; //jump velocity kangaroo1
cin>>sp2; //starting point kangaroo2
cin>>j2; // jump velocity kangroo2

while(true)
{
if( sp1>sp2&&j1>j2 || sp2>sp1&&j2>j1 || j1==j2)
{
cout<<"NO";
break;
}
if ((sp1=sp1+j1)==(sp2=sp2+j2))
{
cout<<"YES";
break;
}
}
return 0;
}