#include<bits/stdc++.h>
#define ll long long
using namespace std;
const int N=1e6+10;
const int INF=0x3f3f3f3f;
inline int read(){ll x=0,f=1;char ch=getchar();while (ch<'0'||ch>'9'){if (ch=='-') f=-1;ch=getchar();}while (ch>='0'&&ch<='9'){x=x*10+ch-48;ch=getchar();}return x*f;}
int main(){
	ll a,b,k;
	cin>>a>>b>>k;
	if(b*k==a)cout<<"YES";
	else cout<<"NO";
}